This small hole gage set is fully hardened for long tool life. It's half ball construction allows it to be useful in shallower applications that aren't accessible with the full ball style. The knurled know at the endof the handle adjusts the gage to the hole size and readings are obtained by measuring over contact points with a micrometer.
Pittsburg Alleghany
Full Ball Small Hole Gage Set, .125"-.500" Range (4 Gages in Set)
$22.00
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