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HD400 Horizontal Benchtop Optical Comparator

HD400 Horizontal Benchtop Optical Comparator



  • Dual-lens bench top model


  • 16" x 6" (406 x152mm) XY stage travel


  • 16" (400mm) diameter screen



  • All metal construction for optimum stability
  • 16" (400mm) diameter screen with crosslines, overlay clips
  • Dual mirror design for vertically erect image
  • 21.3"x5.1" (540x130mm) stage surface
  • 16" x 6" (406 x152mm) XY stage travel, 2" (50mm) focus travel
  • 110lb (50kg) maximum load capacity
  • Dual lens slide for instant magnification changes
  • Fine adjustment for X and Y axes
  • Quick release mechanism for X-axis
  • Heidenhain glass scales for 0.00002" (0.5μm) X and Y resolution
  • Helix angle adjustment with ±15° Vernier scale
  • Fan cooled LED surface and profile illumination
  • Flexible duplex fiber-optic surface illumination




  • Six interchangeable fixed magnification lenses including 10x, 20x, 25x, 31.25x, 50X, 100x
  • OV2 Video system with video edge detection
  • TOV2 Telecentric Video system with video edge detection and choice of 0.3x or 0.5x fixed magnification
  • Choice of Quadra-Chek® digital readouts or MetLogix™ M1
  • tablet, or M2 or M3 measuring software with touch screen
    monitor and PC
  • Manual, motorized or CNC stage motion control
  • 23" (58cm) or 32" (81cm) purpose built cabinet stand
  • Canopy and curtains (designed to mount on the Starrett cabinet stand)
  • Swing away lamp house
  • Extensive line of accessories




  • Gross weight: 385lb (175kg)
  • Net Weight: 330lb (150kg)
  • Shipping dimensions:
    49" x 32" x 51" (125 x 81 x 130cm)




METLOGIX™ M1 measuring software utilizes an Android operating system and a Bluetooth connection. Clean and simple touch screen interface with large icon buttons and intuitive operation.


METLOGIX™ M2 measuring software with a 15.6" color touch screen, 2D geometry software for point, line, circle, distance, angle and skew. Windows® 7 PRO operating system. Supports optical edge detection
and CNC control.


METLOGIX™ M3 measuring software displays on a touch screen monitor and PC. Supports both optical edge detection and video edge detection, and has Wi-Fi network connectivity for import/export of CAD files and data.


QUADRA-CHEK® QC221 Digital readout. Monochrome LCD screen (5.7"), sealed metal housing, 2D geometry software. Supports optical edge detection.


Mounted to comparator arm              x       x           x
Color graphics       x       x       x  
Touch screen operation       x       x       x  
MS Windows® operating system       x       x    
X-Y-Q (angle) measurements       x       x       x           x
2D geometry software with skew       x       x       x           x
Optical edge detection option       x       x       x           x
Video edge detection option       x      
CAD file import and export option       x      
CNC drive option       x       x    
Software developer METLOGIX™ METLOGIX™ METLOGIX™ Metronics / Heidenhain




The HD400 is available with a choice of six projection lenses, the Starrett OV2 Optical Video system or TOV2 Telecentric Video system. All interchangeable lens assemblies, the OV2 and the TOV2 Video cameras are mounted by a bayonet-style lens system which allows quick changeover between magnifications or between the OV2 and TOV2 Video cameras and VED operation.


Lens Selection Guide


Magnification 10x 20x 25x 31.25x 50x 100x
Screen Diameter 16” 16” 16” 16” 16” 16”
Field of View 1.6" (40mm) .8" (20mm) .6" (16mm) .5" (13mm) .3" (8mm) .16" (4mm)
Working Distance 3.1" (80mm) 3" (76mm) 2.5" (62mm) 2.2" (57mm) 2" (50mm) 1.5" (41mm)
Max. Dia.: Half Field 9.5" (245mm) 9.5” (245mm) 10.3" (263mm 10" (253mm) 7.1" (185mm) 4" (106mm)
Max. Dia.: Full Field 7" (180mm) 8" (200mm) 10" (250mm) 9" (234mm) 5" (125mm) 3.9"


Field of View Terminology


Working Distance: Is the distance between the objective lens and the component when the component is in focus
Field Of View (FOV): Is the viewable area. To fill the 16" (400mm) diameter screen when using a 10x lens, the maximum diameter object projected would be 1.6" (40mm).
Half Field View: Is the maximum size a component can be projected to the
center of the screen before colliding with the lens.
Full Field of View: Is the maximum size a component can be projected over the
full screen before colliding with the lens.
Projected Image: Is how a component is projected onto the screen in relation to  its placement on the workstage.




  • Precision Centers and Vees
  • Rotary Vee Blocks
  • Rotary Vises
  • Vertical Glass Plate Holders
  • Magnification Check Gradules
  • Fixed Vises
  • Cabinet Stands
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