Geric Small Bore Gauge Set 4 Piece 4-13mm

For quick inside measurements of small holes and bores without needing inside micrometers.

FEATURES
Ball type head with flat bottom
Measuring range 3 - 13mm (1/8" to 1/2")
Stainless steel construction
Plastic storage pouch

SET INCLUDES
3 - 5mm depth 22mm
5 - 7.5mm depth 26mm
7.5 - 10mm depth 28mm
10 - 13mm depth 30mm
 

HOW TO USE BALL TYPE BORE GAUGES
1. Drop the gauge in the hole and lightly tighten the thimble at the end of the gauge.
2. Remove and measure with your micrometers or digital caliper.