An improved mechanical system increases its strength and wear resistance. All contact points are tungsten carbide. Robust, easy to use and suitable for most environments and applications.
Set the gage with a setting ring or micrometer by rotating the dial face to zero. During measurement, the gage is inserted into the bore at an angle and then rocked slowly to enable a reading to be taken. A spring loaded center during measuring operation when the minimum reading gives the bore size.
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