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Contact Gages are used to determine the size of a contact’s mating end (sizes 12-22) which then aids in selecting the proper installation and/or removal tooling.
Gage size of a contact is determined by matching a contact gage with the contact mating end and noting the size of the best fitting gage. To gage pins, start with the smallest gage and work your way up the scale; the first gage that fits over the pin is the size of that pin. To gage sockets, start with the largest gage and work your way down the scale; the first gage that fits inside the socket is the size of that socket.
The gage sizes are stamped on the tool and all contact gages are color coded for correct size identification. The gage end used for measuring socket contacts is marked with an “S”. And the gage end used for measuring pin contacts is marked with a “P”.
CAUTION: These tools are not to be used as a pin straightener.