SM350 – Optical Comparator

The Fowler Baty SM20 is a vertical light path floor standing optical comparator with a 20″/500mm which features a large heavy duty high precision workstage with 250mm x 125mm measuring range and a 0.5 micron resolution.


  • 20″/500mm screen with 90 degree crosslines and chart clips
  • Angled screen for easy viewing
  • Profile illumination with halogen lamp and green filter
  • Surface illumination through twin fiber optics for bright full color surface inspection
  • Single lens mounting
  • Lens magnification choice: 5x, 10x, 20x, 25x, 50x and 100
  • Helix adjustment of light source for accurate thread form projection
  • Large stage travel 250mm (10″) x 125mm (5″)
  • Large stage travel 10″ (250mm) x 5″(125mm)
  • Digital angle measurement
  • 0.5 micron resolution
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