Radius on each gauges is less than the minimum diameter to be measured, which provides the two-point contact necessary for maximum accuracy
The set includes ranging from 0.125"-0.150", 0.150"-0.200", 0.200"-0.300", 0.300"-0.400" and 0.400"-0.500" and length 2", 5 gauges in set
These small hole gauges are well balanced tools that are ideal for accurately measuring small holes, slots, grooves, and recesses in all kinds of work. Accurate measurements are obtained by slightly "rocking" these gauge in the hole to be measured. This will guarantee contact at the true diameter. The final size is then obtained by measuring over the ball contacts with a micrometer. Brand: Starrett, Model: S830FZ
Custom Tab 01
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