Ammeter 30-0-30 amps, Battery, Type D-30, US Navy PBM-5 Mariner Cold War Likely from the 1950s or

Likely from the 1950s or 1960s

Despite slight discoloring of the cover

US Navy Type CV-22021

but the outdated cord has been removed for safety

and the repair activity on the F-I06 fighter-interceptor

Ammeter 30-0-30 amps, Battery, Type D-30, US Navy PBM-5 Mariner Cold War Likely from the 1950s orHere is an aircraft battery Ammeter, Weston model 606, type T 203, as appeared on the flight engineers panel of aircraft of the US Navy such as the patrol bomber seaplane PBM 5 Mariner (see illustration showing the location on the panel from the PBM 5 flight manual dated 1944). The battery ammeter indicates the current flow through the battery charging system. A "zero center" ammeter, during charging, shows a (+) positive reading indicating the