BRODHEAD PATENT STAR TOOL CO. CAM LOCK MARKING GAUGE - 8"

Stamped "PAT'D APRIL 21 68" around the "STAR TOOL CO" logo. Excellent overall condition noting a sliver off the groove that the cam lock action works on, but which doesn't impair use. Seldom seen. Excellent condition for something over 150 years old!

More information on this patent can be found via datamp.org who describes this as "One of the most brilliant designs in tool history. "