/ Precision Measuring Tools / Precision Hand Tools / Hole Gages / Small Hole Gages / S831EZ * Not actual product image 53087 S831EZ Small Hole Gage - Set 53087 Other similar products The Starrett 831 Small Hole Gage Set contains a gaging surface that is a half-ball with a flat bottom. This permits use in even the most shallow holes, slots, and recesses. SET of 4: Nos. 831A/B/C/D, in Case. Features Specifications Contact Starrett 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 Case 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): .125-.500" Range (mm): 3.2-12.7mm Length (in): 2-13/16-3-1/2" Length (mm): 70-90mm