400 Series Desktop Inspection and Measurement Systems

400 Series Horizontal Desktop Digital Optical Comparator with monitor

The 400 Series VisionGauge® Digital Optical Comparator is a state-of-the-art inspection and measurement system. It’s a compact desktop optical comparator that still provides a large working envelope. This system is especially well suited for lower volume applications.

These optical inspection systems offer operator-driven, manual stage movement across 3 axes and are available in both horizontal and vertical configurations. Despite it being a small optical comparator, the system is performance-oriented with high-resolution, precision optics and ultra-bright LED computer-controlled illumination for sharp and clear images. A single high-resolution monitor is provided to see the entire image at once, with a secondary monitor as an option.

The 400 Series is a very cost-effective, full-featured inspection and measurement system that has all of the advanced, patented VisionGauge® software capabilities, including CAD Auto-Align™ and CAD Auto-Pass/Fail™ software tools, and our patent-pending Tooth Checker™ tool for fast, accurate, and operator-independent Part-to-CAD comparison. Compare parts to their CAD file beyond the optical field-of-view, across the entire stage travel! Results are easy to report with automatic image & data collection and built-in SPC and data-exchange capabilities.

An optional laser module enhances height/depth measurement capabilities in the Z axis, and additional customizations are also possible to solve your application.

Advantages of 400 Series Desktop Inspection and Measurement Systems

This versatile benchtop optical comparator has the ability to automatically obtain images, gather data, and generate reports, making it one of the most convenient tools you can place in your machine shop or manufacturing facility. New technology and a wide range of benefits offer an advantage over traditional comparators and other optical inspection systems.

The 400 Series VisionGauge® Digital Optical Comparator is compatible with countless applications, and presents many additional advantages including:

  • Compact table top design with up to a 12″ x 12″ envelope to accommodate a variety of parts and fixtures
  • Intuitive software with a user-friendly interface and efficient performance
  • High-resolution, precision optics and repeatable computer-controlled LED illumination for high-contrast, crisp imaging
  • Single magnification optics with extended depth-of-field and long working distance provides maximum flexibility
  • Optical accuracy better than +/-0.00015″ (i.e. 4 μm)
  • Proprietary VisionGauge® measurement and inspection technology, including CAD Auto-Pass/Fail™, CAD Auto-Align™, and Tooth Checker™ for operator-independent Part-to-CAD results
  • Automatically create reports and collect measurements, statistics, images and other data for complete documentation
  • Robust design with no consumable parts
  • Automatic image & data collection with built-in SPC and data-exchange capabilities


Our optical inspection technology is continuously improving, with new innovations solving all types of industrial inspection applications with increasing speed and accuracy. Despite its compact size, the 400 Series VisionGauge® Digital Optical Comparator has the same powerful software toolset as larger optical inspection devices.

Additional features include:

  • VisionGauge®’s extensive set of software tools for image analysis and sub-pixel accurate measurements
  • Available in Vertical and Horizontal configurations
  • Manual stage movement and inspection on 3 axes
  • 0.25 micron resolution encoders on the X and Y axes
  • Ultra-bright, repeatable LED computer-controlled illumination
  • A single high-resolution monitor allows the entire image to be viewed at once, with an optional secondary monitor
  • Optional LASER module for Z-axis height measurements
  • Customizable optical configurations and custom workholding available
CAD Auto-Align™, CAD Auto-Pass/Fail™ result on the VisionGauge Digital Optical Comparator
Patented VisionGauge® CAD Auto-Align™ and CAD Auto-Pass/Fail™ tools provide fast, accurate and operator-independent results
Profile tolerance Pass/Fail on the VisionGauge Digital Optical Comparator
The perfect solution for checking profile tolerances!
High-accuracy measurement tools on a Digital Optical Comparator
The system has a broad set of high-accuracy measurement tools
back-illumination of a part on a Digital Optical Comparator
front-illumination of a part on a Digital Optical Comparator
Both front- and back-illumination are available. Works well on different surfaces and materials, including metals & plastics

What Are Optical Inspection Systems?

An optical inspection system is a machine/device that uses visual methods to check manufactured parts/items against their designed product specifications. It may employ a number of different inspection techniques to obtain data about surface defects and dimensional defects, perform measurements, perform absence/presence detection, and much more.

VisionGauge® Digital Optical Comparators / Profile Projectors replace older, traditional optical comparators. Dated machines have less accurate and less efficient technology, and traditional optical inspection equipment may require multiple overlays and mylars to compare parts. Using a part’s CAD file directly eliminates the need for other tools. VisionGauge®’s advanced software and patented tools can easily solve a vast array of applications with greater accuracy and efficiency. The best model for each industry depends on specific requirements of your application.

Learn More About Optical Measurement Systems for Industrial Inspection

The 400 Series VisionGauge® Digital Optical Comparator has advanced features and benefits that make it a cost-effective tool for quality control of your manufacturing operations, regardless of your industry. Whether operating manually or automating part inspections, our systems make it easy to check parts, obtain Pass/Fail results, and collect detailed data reports. Contact us with the details of your application for our benchtop optical measurement system prices.

Request more information about the 400 Series VisionGauge® Digital Optical Comparator below.