Please forgive me if this may be common knowledge but I just found this link I forgot I bookmarked...
https://archive.org/details/TM9-1575
TM 9-1575 Ordnance Maintenance: Wrist Watches, Pocket Watches, Stop Watches, and Clocks (April 6, 1945)
Please forgive me if this may be common knowledge but I just found this link I forgot I bookmarked...
https://archive.org/details/TM9-1575
TM 9-1575 Ordnance Maintenance: Wrist Watches, Pocket Watches, Stop Watches, and Clocks (April 6, 1945)