All Leitech gauges can be supplied with a certificate of calibration for a nominal charge. On the certificate, the measuring results for each insert are stated, as well as tolerance limits for the standard and tolerance class employed.

The insert is marked with the serial number shown in the certificate. A gauge with a GO insert and NOT GO insert will need certificates for both.

A & B Certificate

An A-certificate provides the measured values for:

• the major diameter of the thread insert
• pitch diameter
• flank angle
• minor diameter and pitch

A B-Certificate provides the measured value for:

• pitch diameter