DISK SPEED INDICATOR BS Mk15 US ARMY AIR FORCES TOTCO 100 RPM

Description

Now up for your consideration is a very nice in working condition
Vintage TOTCO Disk Speed Indicator.
The markings on the dial are:  100 RPM
B.S. Mk. 15 Disk Speed Indicator. TOTCO.
Technical Oil Tool Corp. Los Angeles, California
Made in U.S.A.