Ammeters, Voltmeters, Lot of 6, Volts, Amps, Microamps, & Milliamps, Weston, Triplett A-20 The serial # prefix starts

The serial # prefix starts with AF-45

spec number AN-G-31a

25 inches diameter and ~3 inches deep

an airport or stations along a specific route) via externally-mounted antenna

Ammeters, Voltmeters, Lot of 6, Volts, Amps, Microamps, & Milliamps, Weston, Triplett A-20 The serial # prefix startsThis is a lot of 6 vintage ammeters, likely used by the US military during the 1940 50s: AC 0 30 Volts, Weston model 1534, 3. 5in round AC 0 15 Volts, Weston model 301, rectifier type, 3in square DC 0 1 Amps Weston model 301 approx 3in square DC 0 400 Microamps Westinghouse style CH 10533 N3 1 approx 3. 5in round DC 0 50 Milliamps Triplett approx 2. 25in square These instruments are clearly 'experienced' but are in reasonable shape for their age. I