Small Hole Bore Gauge Set

Small Hole Bore Gauge Set - T&E Tools #MT171

• They require a slightly different technique to the telescopic gauge, the small hole gauge is initially set smaller than the bore to be measured.

• It is then inserted into the bore and adjusted by rotating the knurled knob at the base, until light pressure is felt when then gauge is slightly moved in the bore.

• After being withdrawn the gauge is then removed and measured with the air of a micrometer.