Ammeter 30-0-30 amps, Battery, Type D-30, US Navy PBM-5 Mariner Cold War Type A-9 (glass cracked)

Type A-9 (glass cracked)

as used in the US Air Force Strategic Bomber the B-36H Peacemaker (see illustration of the B-36H Engineers Station Panel from the B-36H flight manual dated 1954 showing the location of this indicator with the right red dot)

Likely from the 1950s or 1960s

This camera

but the outdated cord has been removed for safety

Ammeter 30-0-30 amps, Battery, Type D-30, US Navy PBM-5 Mariner Cold War Type A-9 (glass cracked)Here 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