Instead of guessing where to cut or place an implant, surgeons use real-time 3D maps to monitor their instruments. This process simply means surgical navigation systems. During surgery, it guides surgeons as they avoid sensitive nerves and organs. When they convert invisible internal anatomy into clear digital images on a monitor, these platforms enhance patient safety.

The platform delivers visual suggestions during complex procedures so they can track instruments as they move within the body. A clear screen provides 3D models synchronized with the patient’s anatomy. The screen shows three-dimensional models of the patient’ body so that the team can make adjustments at any point during the procedure.

What are Surgical Navigational Systems?

Surgical navigational systems are like the GPS for the operating room. The devices give a screen real-time visual information for doctors to track instruments as they move through the body.

The equipment collects data from scanners, cameras, and tiny sensors and stitches them to create a 3-dimensional map, which changes any time a tool is moved.

To start the operation, the technician takes a CT scan or MRI of the patient. During the operation, markers on the skin or on a headband tell the technology where the patient’s body is in space. When the surgeon holds the tracked tool, the computer registers it to the preoperative model.

What types of surgical navigation systems Are there?

Because each surgery has different needs, manufacturers have produced different types of navigation systems. Here is what they look like:

Optical Navigation (The “Camera” Approach)

This method is the most common system used in the operating room. The high-definition camera set is mounted on the table, and the surgeon attaches small, reflective markers to his tools and the patient’s body. The cameras track these landmarks to determine their exact position in 3D space.

Electromagnetic Navigation (The “Magnetic Field” Approach)

Occasionally, the cameras are not the best option because there could be something that can block their view. In these instances, doctors may use electromagnetic systems to create a low-frequency magnetic field around the patient.

Special sensors in the surgical tools help the surgeon to know the exact location they want to operate on. The vital point is that you don’t need a line of sight; the tools can be tracked.

Image-Guided Ultrasound (The “Live View” Approach)

While the first two use CT scans or MRIs to decide before the surgery, this isn’t always the case. Some systems even use ultrasound information.

These combine the pre-surgical 3D scan and a real-time ultrasound snapshot, to give the surgeon a “live” update so they can see if an organ or tumor has moved in position during the procedure.

Augmented Reality (The “Smart Glasses” Approach)

Surgeons wear headsets that show digital maps directly in their line of sight. When they look at the patient, they can see internal organs, blood vessels, or bones appearing to float in their correct positions relative to the body.

Benefits of Surgical Navigation Systems

When surgeons have a clear, real-time view of the area they’re operating on, the entire process becomes safer, and more accurate. The benefits are as follows:

Precision Accuracy

The system prevents harm to nearby tissue. Even in complex surgeries, the technology ensures consistent work, and it reduces human errors.

Safer Procedures

Surgical navigation systems decrease the risk of bleeding, nerve damage, or other complications. In addition, real-time feedback allows the surgical team to respond quickly if an issue arise while the surgery is still on.

Faster Recovery

Precision means surgeons can make small incisions. Usually, the pain is less and it heals faster. Normally, patients leave the hospital after 2 days.

Technologies of Surgical Navigation Systems

These systems rely on certain technologies and components to function effectively. Some of the technologies are

Imaging and Scanning

Before a surgery is done, doctors inspect the internal system of the patient. Special scanning devices produce detailed maps of bones, organs, and skin.

CT (Computed Tomography) scanners take multiple X-ray images from various angles and combine them into a 3D model for surgeons to study.

MRI (Magnetic Resonance Imaging) machines use strong magnets and radio waves to create detailed pictures of soft tissues like muscles, ligaments, and internal organs.

Ultrasound devices send sound waves into the body and capture the returning echoes to produce real-time images.

Augmented Reality (The “Smart Glasses” Approach)

No need of using a separate screen during the operation. Surgeons wear headsets that display digital maps. A s they look at the patient, they can see internal organs, blood vessels, or bones that appear to be floating.

Top Surgical Navigation Systems

There are several of them; however, these five lead currently.

Stryker Navigation Systems

Their navigation systems are a result of years of innovation. They focus on solutions that integrate different parts of surgical planning and execution.

Features:

• Advanced 3D imaging of anatomical maps
• Infrared tracking technology for precise instrument positioning
• Compatibility with various surgical tools and implants
• User-friendly interface to reduce learning time for surgical teams
• Real-time feedback to guide surgeons during surgeries

Common Uses:

• Stryker systems are used in knee and hip replacements, requiring precise joint placement.
• Orthopedic surgeons need these systems in spinal fusion surgeries.

Medtronic StealthStation

Medtronic is one of the biggest medical tech companies. The StealthStation is a surgical navigation system and among the best.

Features:

• Advanced tracking algorithms that stay accurate even if the patient’s position changes
• Integration with Medtronic’s wide range of surgical instruments and implants
• Software that combines pre-op scans with real-time surgical visuals
• Voice control to adjust settings during surgery and maintain sterile conditions
• Detailed reporting tools to help hospitals track outcomes and improve procedures

Common Uses:

• Neurosurgeons use StealthStation to remove brain tumors and complex operations that involve the nervous system.
• ENT specialists rely on it for intricate sinus surgeries and skull-base procedures.

BrainLab

BrainLab creates adaptable platforms that fit various surgical fields and hospital setups.

Features:

• Cloud-based data management so surgical plans can be viewed from different places
• A flexible platform used in neurosurgery, orthopedics, and trauma procedures
• High-resolution 3D visuals to help surgeons understand intricate anatomical structures
• Mobile and compact hardware that suits different operating room arrangements
• Regular software updates to improve features based on user input

Common Uses:

• Suitable for complex surgeries like functional neurosurgery
• Trauma surgeons opt for this system when they want to rebuild complex fractures with precision

GE Navigation Systems

General Electric (GE) systems work smoothly with their well-known imaging devices. It provides a complete solution for hospitals engaged with GE’s technology.

Features:

• Easy integration with GE’s CT, MRI, and fluoroscopy machines
• Powerful image processing to improve difficult-to-see areas
• Scalable solutions for growth, from small clinics to big medical centers
• Advanced augmented reality with digital and physical surgical guidance
• Strong regulatory compliance and thorough clinical validation

Common Uses:

• Cardiologists and heart surgeons depend on GE navigation systems for procedures like catheter-based interventions.
• They are also used in abdominal surgeries, such as liver and kidney operations.

Zeiss Kinevo

This system merges cutting-edge microscopy with navigation tools to provide a combined visualization and solution that many surgeons rely on.

Features:

• Built-in microscope navigation to show data in the surgical view
• Provides superior images of the anatomical structures
• Flexible design for hospitals to upgrade
• Records surgeries for training and quality assurance
• Ergonomic setup to reduce surgeon fatigue during long surgeries

Common Uses:

• Neurosurgeons use the Kinevo system to remove tumors and blood vessels in the brain.
• Also, it’s helpful in spinal surgeries.

How to Choose Superior Surgical Navigation Systems

If you’re ready to add this to your hospital, then take note of these salient points here:

Image Quality

The main purpose of a navigation system is for surgeons to have a clear view of a patient’s internal organs. High-quality images are vital during surgery. Surgical teams should get systems that have sharp images.

Tracking Precision

The navigation system must accurately indicate the location of surgical instruments relative to the patient’s anatomy. When evaluating options, inquire about error margins and system performance.

Compatibility with Existing Equipment

The navigation system must integrate seamlessly with existing equipment. Compatibility issues can make your hospital to get adapters, pose a threat on the patient’s life.

Speed

Delays between instrument movements and screen displays can be dangerous. A quality device provides immediate updates and shows current positions.

Dependability

Check product histories, read independent reviews, and consult other medical facilities about their real-world experiences.

Patient Safety

Look for warning systems that alert surgeons when instruments approach sensitive areas.

Manufacturer Support

Even the best equipment needs reliable support. Manufacturers should offer responsive customer service, detailed training programs, and accessible technical help.

Cost

Consider total cost, such as installation, training, maintenance, and future upgrades.

Read also: Best Surgical Scrub Stations for Infection Control (2026 Guide)

Final Thoughts: Surgical Navigation Systems

Surgical navigation systems enable a surgeon to get to the organ he or she plans to operate on. With this, no guess work and it saves a lot of time in the theater.

They integrate the most recent pre-surgery scanning technology with real-time tracking. There are cameras throughout the room that are linked to small sensors on surgical tools.

The equipment displays the patient’s anatomy on a screen with the surgical instrument’s location. These tools help physicians to do more precise procedures with smaller incisions, and  there’re less pre and post-operative complications.

Surgical microscopes help surgeons see tiny structures more clearly during delicate procedures. They are now essential for brain, eye, ear, and vascular surgeries where precision matters.

These systems use advanced optics and powerful lighting to magnify small surgical areas during operations.

What Is a Surgical Microscope?

A surgical microscope is a medical imaging device surgeons use to magnify small structures during surgery. It has bright light, zoom capabilities, and can project a surgical image onto screens for the other team members to see.

This device is useful in fields where precision matters. In neurosurgery, doctors operate on the brain and spinal cord. Even a small mistake can affect movement, speech, or memory.

Ophthalmologists use surgical microscopes for delicate eye procedures involving the retina and lens. ENT surgeons also rely on them for sinus procedures and hearing restoration surgeries.

Surgical microscopes for operating rooms, are different from the regular microscopes you’d see in a school science lab. Clear magnification and bright lighting help surgeons work comfortably during long procedures.

Below are some of the leading surgical microscope brands used in modern operating rooms.

Best Surgical Microscopes for Precision Procedures

Carl Zeiss

Carl Zeiss is one of the most recognized surgical microscope manufacturers in the medical industry. Their systems are used in neurosurgery, ENT, and vascular procedures because of their optical clarity.

Features:

• High-clarity lenses
• Distortion-free imaging
• Adjustable magnification
• Bright LED lighting
• Ergonomic controls

Uses:

• Cataract surgeries
• Retinal procedures
• Plastic and hand surgeries

Leica Microsystems

Leica is also a German company that produces optical products. Leica manufactures high-quality surgical microscopes trusted by many hospitals and clinics. These microscopes are suitable for both small clinics and large hospitals.

Features:

• Share images and videos to the entire team
• Can enlarge the images
• Leica microscopes are also known for their durable construction

Uses:

• The most common use of Leica microscopes is in eye surgery
• They’re also used in ophthalmology to treat cataract and retinal
• They are popular in plastic and hand surgery

Haag-Streit: Best Surgical Microscopes

This Swiss brand manufactures quality precision instruments. Hospitals looking for precise imaging systems often consider Haag-Streit surgical microscopes.

Features:

• Advanced lighting systems
• Modular design allows upgrades to keep pace with technology

Uses:

• It enables surgeons to perform corneal transplants and glaucoma therapies
• Some of the models are also used for complicated oral surgeries

Best Surgical Microscopes: Takagi

Takagi is a Japanese company that produces original surgical microscopes. They’re mostly used in Japanese hospitals.

Features:

• Intuitive controls
• Integrated high-definition cameras
• Silent motors

Uses:

• Takagi microscopes are good for brain and spine surgeries
• Their small size is perfect for narrow surgical areas
• They are also useful for vascular surgeries

Topcon: Best Surgical Microscopes

Topcon manufactures medical and agricultural equipment. Their brand is listed among the best surgical microscopes for precision procedures.

Features:

• Simple interface
• Excellent customer support
• Integration with digital recording systems
• Power-saving design

Uses:

• Eye doctors use them for simple operations
• Veterinary surgeons use them for animal procedures.

Comparison Table on the Best Surgical Microscopes

Optical Quality and Magnification

The main job of a surgical microscope is to provide a clear, magnified view of the area being operated on. Optical quality refers to how accurately the microscope displays colors, shapes, and textures without distortion.

More magnification helps surgeons see smaller details, but the image must remain clear and bright. Many surgical microscopes offer magnification levels from 2.5x to more than 40x.

Lighting Systems

Modern LED lights have replaced older bulbs in surgical microscopes. They provide bright illumination and less heat. This protect delicate tissues during long procedures.

Working Distance

Some procedures require the microscope to be close, while others need more space for tools and hands. Most surgical microscopes have working distances between 150 and 500 millimeters. For spinal or deep tissues, surgeons need more distance, while eye surgeries work with less.

Ergonomics

The best microscopes allow surgeons to adjust their viewing positions. Some have tilted tubes to maintain a natural posture. Eyepieces should be comfortable for people that wear glasses.

Positioning

A surgical microscope should move easily and stay steady once set in place. Floor-mounted microscopes have stable bases with lockable wheels, while ceiling-mounted ones save floor space and offer more flexible placement.

The arm should keep the optical head stable during precise movements but also allow for easy adjustment. Surgeons prefer systems that can be moved effortlessly.

Comparison of Top Surgical Microscopes

Here’s a side-by-side comparison of some leading surgical microscope systems

Higher Magnification

It allows surgeons to see smaller structures correctly. However, the viewing area becomes smaller as magnification increases.

The working Distance

This’s the space between the microscope lens and the patient. Procedures that require many instruments or deep access need more space for movement. Eye surgeries need shorter distances because of the small area involved. The best microscopes provide various working distance options or an adjustable range.

The field of View

The field of view describes how much of the surgical area is visible at once. A larger field of view at low magnification aids orientation.

As you increase magnification, the field of view narrows, showing smaller sections. Both these measurements matter, as they show how versatile the microscope is across different levels of magnification.

Brightness

More light improves color accuracy. Modern LED lights have replaced older bulbs because they offer bright, and produce less heat, which keeps delicate tissues from drying out during long surgeries.

How to Choose the Best Surgical Microscopes

When picking a surgical microscope, your choice should depend on the procedures you plan to perform. Neurosurgeons operating on the brain and spinal cord need microscopes with excellent optical clarity.

ENT specialists dealing with ear, nose, and throat issues need microscopes with flexible positioning to reach various parts of the head and neck. Ophthalmologists doing eye surgeries require optics that are optimal for viewing inside the eye.

Consider who will use the microscope

Teaching hospitals may prefer models with dual viewing capabilities, enabling residents to watch experienced surgeons. Smaller clinics with limited budgets may choose basic features over advanced options. Space is also vital. A ceiling-mounted system can help free up room in busy operating theaters.

FAQs on the Best Surgical Microscopes

1. What magnification level is needed for microsurgery?

Surgeons use magnifications between 6 and 30 times. Exceeding 30 times can reduce depth perception. So higher magnifications are only used when necessary.

2. Which is better: LED or Xenon lights?

LED lights last longer, stay cooler, and use less power. Xenon lights produce brighter and more natural colors but require bulb replacements.

3. Can a microscope connect to a surgical robot?

Yes. Modern surgical microscopes can integrate with robotic surgical systems. Models like Zeiss Pentero and Leica M530 have kits that integrate with popular robots like ROSA and da Vinci.

4. Is a 3-D exoscope a replacement for a microscope?

Not yet. Exoscopes are suitable for teaching and checking deeper areas of the body. But, traditional microscopes provide clearer views of tiny structures.

5. What is the typical downtime for service?

With an on-site service deal, most problems are fixed within one to two days. Regular check-ups can help avoid unexpected malfunctions and keep the equipment running smoothly.

Read also: Digital Operating Room Integration: Best Systems for Operating Rooms

Final Thoughts on the Best Surgical Microscopes

Surgical microscopes have become essential in modern operating rooms. They allow surgeons to perform delicate procedures with greater precision, clearer visibility, and better control.

Modern systems now include advanced lighting, digital imaging, ergonomic positioning, and recording features that improve both surgical performance and training.

Choosing the right microscope depends on the type of procedures performed, the available operating room space, and the hospital’s budget.

In the operating room, vital signs, scans, and other crucial information were previously displayed on multiple screens. This meant surgeons had to look away from the patient to check details, complicating the process and possibly delaying urgent actions. Digital operating room integration (DORI) has transformed this by connecting all devices and screens into a unified system.

Now, instead of moving between different screens, surgeons receive all necessary information from one console. For instance, a patient’s MRI scan can be displayed right next to the live video feed, and surgeons can adjust lighting and imaging equipment without leaving the operating area. This results in a smoother, less distracting procedure and creates a safer environment for patients.

What Is Digital Operating Room Integration (DORI)?

Digital operating room integration brings together all the equipment in a surgery room into one central system. Instead of separate screens, keyboards, and controls for devices such as cameras, monitors, and surgical instruments, this technology combines them so the surgical team can control everything from one place.

This system uses specific software and hardware to connect medical devices that weren’t meant to work together initially. The integration platform takes signals from different machines like imaging devices, cameras, and vital sign monitors, sending them to screens wherever the surgeon needs to see them.

With just a few taps on the control panel, the surgeon can display a CT scan, switch to a live video feed, or check the patient’s blood pressure. Some systems even support voice commands to adjust the screen and layout, keeping the surgeon’s hands free for the operation.

Features of an Integrated Digital Operating Room

A fully integrated digital operating room today combines various systems into one smooth workflow, such as the following:

Video Integration Systems

Surgeons need a clear and real-time view of their work. Modern systems capture footage from laparoscopic cameras, endoscopic tools, microscopes, and overhead cameras, then stream it to monitors throughout the room.

Many hospitals use high-definition cameras at 4K resolution, to provide crystal-clear images. Some places use 3D cameras during surgeries. The video integration hub coordinates these signals, also allowing surgeons to switch views and compare multiple images automatically.

Surgical Display Solutions

Surgeons require clear, accessible information without diverting their attention from the patient. Large mounted screens address this need. These monitors are placed on walls or suspended from booms, showing vital signs, live video, and patient information simultaneously.

This setup allows surgeons to control the display content. Nurses can quickly bring up an X-ray or MRI without compromising sterile procedures. Some monitors respond to voice commands, enabling surgeons to say, “Show CT scan,” and view the desired image instantly.

Integration Control Systems

The control system acts like the brain of the digital operating room by linking all devices so staff can control them from one place using a wall-mounted touch screen or a handheld remote. With a single button press, you can switch on various systems, dim the lights, and begin recording.

Presets help save time between surgeries by allowing staff to set their preferences for each type of operation. For example, when a knee replacement starts, the system automatically loads the right camera angles, views, and equipment settings.

Image Management Platforms

Digital imaging files are often large, and the management platform helps store, organize, and retrieve them by connecting to the picture archiving and communication system (PACS).

During surgery, new images join the system instantly, and post-surgery images are also added for comparison. Standard formats like DICOM make it so that different machines work together easily. Ensures X-rays, CT scans, and MRIs integrate smoothly.

The digital OR needs quick, stable connections between all components. Wired connections generally perform better than wireless ones for surgeries. Sufficient bandwidth is key to streaming high-resolution videos without delays.

Interoperability allows devices from various brands to communicate. Hospital IT teams set up systems to interact with each other, preventing staff from having to learn how to use each separate device interface.

Encryption helps secure video feeds and records, while access controls determine who can view or edit information. Regular updates address any security weaknesses.

Digital Operating Room Integration Systems

Digital OR integration systems, or DORI, make these smooth connections possible. Here are five major systems in this market that you should know about.

Stryker Smart OR Integration

Stryker, famous for its surgical tools and orthopedic devices, now leads in operating room (OR) integration. Their Smart OR system links surgical screens, room cameras, lights, and medical devices into one easy-to-use touchscreen dashboard.

It works with the major surgical equipment brands, so hospitals don’t have to replace their current tools. Many operating rooms use voice commands, letting surgeons access images or adjust screens without touching anything.

Benefits

The system saves room setups for different procedures and reduces the time needed to adjust monitors for new cases. Medical residents gain too, since the system records surgeries for training, capturing every screen and angle simultaneously.

Karl Storz Digital operating room integration

Karl Storz was initially focused on endoscopy, creating cameras and tools to help doctors look inside the body. This experience led to the creation of OR1, one of the first fully integrated operating room systems.

Several hospitals in both the U.S. and Europe use the OR1 system for a wide variety of surgeries, from simple gallbladder operations to complex heart procedures.

OR1 is known for its flexible design. Hospitals can start with basic video integration and add new features as needed, like remote consultation tools or connections to robotic surgery devices.

The system handles high-definition video smoothly, which is vital for precise operations where every second counts. Karl Storz also included strong cybersecurity features in OR1 to secure patient information during device communication.

In teaching hospitals, OR1 is preferred because it can easily broadcast surgeries to classrooms or record them for later learning. Experts can join in remotely through secure video links, helping with rare and difficult surgeries.

Philips Digital Operating Room Integration

Philips, a longstanding figure in healthcare technology, supplies tools to hospitals worldwide. Their Connect OS serves as the digital core for modern surgical rooms, integrating equipment like imaging devices, patient monitors, anesthesia machines, and surgical tools into a single network.

Connect OS works exceptionally well with Philips’ imaging equipment, such as their intraoperative MRI and CT systems. The platform uses artificial intelligence to predict the surgical team’s needs, providing necessary patient information or adjusting displays based on the procedure’s stage. Designed with input from surgical experts, the system is user-friendly.

For hospitals dealing with complex tumor removals, Connect OS can lay diagnostic images over the surgical site. It helps surgeons differentiate between healthy and tumor tissues, which enhances accuracy and patient outcomes. It also records every step during surgery, assist with billing, quality checks, and legal documentation.

Medtronic Operating Room Integration Solutions

Medtronic is a leading company in the medical device field. They produce things like pacemakers and surgical robots. Their integration solutions for operating rooms link these devices seamlessly, allowing them to share data that they couldn’t before.

This integration focuses on surgical robotics, particularly with their StealthStation navigation and da Vinci surgical systems. The platform collects real-time data from these robots and displays it beside traditional imaging, providing surgeons with a complete view during minimally invasive surgeries. It also enables remote monitoring, so experts can securely observe surgeries from anywhere.

The system alerts medical teams if a patient’s vital signs become unsafe, even identifying problems early to prevent emergencies. In addition, Medtronic’s inventory management feature automatically reorders supplies, ensuring that there are no shortages during surgery.

Olympus VISERA Elite II

Olympus is well-regarded for its endoscopy equipment, and the VISERA Elite II represents its move towards full operating room integration. This platform offers high-definition imaging paired with smart data handling, especially useful for hospitals frequently performing laparoscopic or endoscopic surgeries.

VISERA Elite II provides exceptional imaging clarity using unique algorithms to enhance details without extra noise. This precision is vital when surgeons search for tiny tumors or navigate through tight anatomical spaces. The system also includes features to document surgeries by capturing images and video clips at important times without interrupting the team.

Departments such as gastroenterology and urology use VISERA Elite II. While it integrates easily with Olympus endoscopes, it is also compatible with third-party devices when needed. It can be used in small clinics and large hospitals.

Challenges of Digital Operating Room Integration Systems

Today, many hospitals use digital systems in operating rooms to enhance surgical results and make teamwork easier. These systems link together cameras, screens, surgical robots, patient monitoring tools, and recording devices into one network. Surgeons and nurses can see important information on displays without losing sight of the patient.

However, to make these technologies work smoothly, it’s quite challenging. Some of the challenges are:

Device Compatibility Issues

A major problem is getting equipment from different manufacturers to communicate. Hospitals might buy imaging machines from one brand, monitoring systems from another, and surgical tools from another. Each brand uses its own software and connection rules. When these systems need to share data during surgery, compatibility problems often arise.

Sometimes, equipment refuses to share data with competitors’ devices, causing hospitals to find costly workarounds. This technical mismatch results in delays as staff ensure all systems are ready before surgery. In emergencies, these delays can impact patient care.

Securing Patient Data

In digital operating rooms, patient data is created and shared during surgeries. This includes medical records, live vital stats, video from inside patients, and various scans, all moving across hospital systems. It’s vital to keep this data safe from unauthorized users.

Recently, attacks on healthcare data have surged. Hackers are aware that medical information is valuable on the black market. More connected systems mean more potential weak spots for attacks. Health facilities must use strong firewalls, data encryption, and access controls to protect their networks.

Evaluating Your Equipment Options: Key Considerations

Check the Compatibility

Make sure that the new device is compactible with the equipment you already have. Facilities sometimes choose new systems that sound great, only to find out they don’t work with their current devices, like endoscopes or monitors. These compatibility issues may require adapters, or extra gear.

User Interface

If your surgical team can’t use a system’s powerful features during an intense operation, they’re useless. The interface should be easy enough so that a nurse or tech can use it without needing the manual, even if they haven’t touched it in a week. Look for touch screen controls that work reliably, and options to adjust views for different procedures.

Support and Service Response

If something fails during surgery, waiting three days for a technician is not an option. Check out each vendor’s service organization before you buy. Know where their technicians are based, how fast they usually respond, and if they offer remote diagnostics.

Read also: Best UV Sterilization Equipment’s for Hospitals

Final Thoughts

Digital Operating Room Integration Systems link all the devices in an operating room into a simple network. Surgeons can view everything on large screens and control cameras, lights, and equipment with a touch. This speeds up operations as nurses spend less time juggling different machines.

The system records everything for later review and lets doctors share images with experts far away. Patients are safer since the team focuses on surgery, not on handling equipment.