Recording Base for Pelorus Drift Sight Mk IIC US Navy Short Sunderland which registers it on a

which registers it on a dial marked in revolutions per minute

indicative of a manufacturing year 1945

the top timer is running (minutes

made by the Pittsburgh Equitable Meter Company (which made gas meters

The gyro is uncaged when the knob is pulled out

Recording Base for Pelorus Drift Sight Mk IIC US Navy Short Sunderland which registers it on aThis is a WWII era Recording Base for the aircraft Pelorus Drift Sight Mk IIC as used in aircraft of the US Navy. The drift sight head would be mounted to the center of the base ring. It is in very good condition given its age. It comes with a roll of paper already installed. Measures ~ 7 inches x 5 inches x 3 inches. If you have a Drift Sight Head in your collection, this is an essential companion item.