Berling Magneto Switch Model SW-1 F-101 Voodoo As an offshoot of this

As an offshoot of this equipment Ryan have also developed a helicopter hovering aid (AN/APN-97) which presumably uses Doppler signals to tell the pilot whether or not his machine is stationary above ground or sea

Being partially a gyro instrument it has

showing the location of the clock

This example is serial # 0300-43 evidence of a 1943 purchase order or manufacture

Berling Magneto Switch Model SW-1 F-101 Voodoo As an offshoot of thisHere is a hard to find, early 1900's Berling Magneto Switch, Model SW 1. Berling Magneto's were used in a number of gas engine applications during this time period, including aircraft. This example came to us from an estate claiming that it was from a Curtiss JN Jenny Biplane, but we have not been able to verify its application to a JN model. It is in good cosmetic condition and the switch easily rotates ON OFF. Approximate 2. 75 inches diameter.