HP 85091A Reference Manual page 48

Gauging and Making Connections
Gauging Devices
• As a matter of routine: initially after every 100 connections, and
after that as often as experience suggests.
When using the 7 mm ECal Kit module, you must remove the 7 mm
NOTE
collet before gauging the pin depth of the connectors. Refer to "Gauging
Techniques" on page 3-22 for gauging instructions. Use the collet
extraction tool provided in your 7 mm kit to remove the collet.
Chapter 3 3-13