AN/UDM-1, A simmular device AN/UDM 1A was in the Treasure Island Radiac Instrument Maintenance School at Treasure Island Devices for calibrating radiological equipment
US Navy Nuclear Biological and Chemical Training School
AN/UDM-1, A simmular device AN/UDM 1A was in the Treasure Island Radiac Instrument Maintenance School at Treasure Island Devices for calibrating radiological equipment