TBF-1 Avenger Torpedo Bomber Cruising Calculator Mark 1-A, Ser # 0300-43 P5M Marlin Eine verletzung dieser plombierung macht

Eine verletzung dieser plombierung macht die eichung ungultig

model 8DJ28AAN

Here is an Annunciator unit

just try to hear that over the cacophony of multiple radial engines

The electrical connection in the back is to power a heater to the instrument

TBF-1 Avenger Torpedo Bomber Cruising Calculator Mark 1-A, Ser # 0300-43 P5M Marlin Eine verletzung dieser plombierung machtThis is an authentic original WWII era Cruising Computer Mark 1 A designed specifically for the US Navy's Grumman Torpedo Bomber TBF 1. The purpose of the calculator was to determine the range, in nautical miles, of the aircraft under various conditions of aircraft weight, head tail winds, fuel quantity on board, true air speed, altitude, and throttle and supercharger blower settings. The calculator is essentially a custom 3 panel slide rule