53086

831D Small Hole Gage 53086

The Starrett 831 Small Hole Gage is exactly the same as the 829 Series except that the gaging surface is a half-ball with a flat bottom. This permits use in even the most shallow holes, slots, and recesses. .400-.500” (10.2-12.7mm) Range, 3 1/2” (90mm) Length recesses.


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Features

  • Ideal for accurately measuring small holes, slots, grooves, and recesses
  • Precision Ground Radius on each gage provides two-point contact for maximum accuracy
  • Used for general work
  • Permits use in shallow holes, slots, and recesses
  • Well balanced
  • More accurate measurements
  • Hardened-ball measuring surface with two-point contact
  • Half-ball with a flat bottom
  • Smooth, sensitive adjustment
  • Adjustment of the gage beyond their range is restricted by a safety stop that prevents breakage

Specifications

  • Range (in): .400-.500"
  • Range (mm): 10.2-12.7mm
  • Length (in): 3-1/2"
  • Length (mm): 90mm

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