Precision Measurement Tools





4pc Small Hole Gage Set


Part Number: 50216
  • Set of 4 gages to measure ranges from 0.125" to 0.500"
  • Hardened, half round ends for deepest measurement hole.


Small hole gages are similar to telescoping gages. They are smaller in size, adjustable, having a rounded measuring member. A knurled screw in the end of the handle is turned to expand the ball shaped end in small holes and recesses. A micrometer is used to measure the ball end. The set of four gages is used to check the dimensions of small holes, slots, and grooves from 1/8 to 1/2 inch in diameter.

To use a small hole gage fit the ball shaped end into the hole or slot. Expand the ball shaped end by turning the screw at the end of the handle while slightly rocking the gage. You will feel when the gage has expanded to the correct dimension. Gently remove the gage from the hole and take a measurement with an outside micrometer.







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