Bendix Aviation Equipment Service Guide, 1943: Eclipse, Stromberg, Scintilla, Pioneer A-7 Corsair I have located this instrument

I have located this instrument on the engineers panel of the US Navy's floatplane JRM-1 Martin Mars

The SCR 269 system (see diagram)

made by Pioneer

Both are in exceptional condition for their age

Bendix Aviation Equipment Service Guide, 1943: Eclipse, Stromberg, Scintilla, Pioneer A-7 Corsair I have located this instrumentHere is an original WWII era (1943) Service Guide for aviation equipment made by the Bendix Aviation Corporation under its brands Eclipse, Stromberg, Pioneer, Scintilla, and Friez. It covers instruments, landing gear, carburetors, magnetos, hydraulics, armament, turrets, and radio equipment. With over 400 pages, including several fold out diagrams, it is ~1 inch thick by 6 inches by 8 inches. This edition contains a misprint of pages 201 239 covering