Vintage UNITED SHOE MACHINERY EDGE GAUGE Cobbler Boot Repair Tool Metal USMC USA

Pocket edge gauge
Stamped: USMC SZG1 Made in USA

USMC = United Shoe Machinery Corp.

The SZG1 gauge is described in their catalogue as:
A pocket edge gauge for gauging finished edges in all sizes from 1 to 25

Approximately:
86mm in length when folded
26g in weight

General usage wear, knocks and marks
Clean - no rust

my ref.Y23