Altimeter MC-3, Astek Instruments, F-4 Phantom II B-25 5 inches long

5 inches long

Here are two types of aircraft Pelorus Drift Sight

marked BU AERO USN

features of the Kearfott system most popular with polar fliers of the time were:

Altimeter MC-3, Astek Instruments, F-4 Phantom II B-25 5 inches longHere is a combination counter pointer Altimeter, made by Astek Instruments, MS35450 1. The MC 3 Altimeters were used in most models of the US military's F 4 Phantom II's including the models B, C, D, and J. The pointer rotates to indicate altitude in hundreds of feet and the counter rotates to indicate thousands of feet. The knob rotates the barometric pressure adjustment. Measures 3. 25 inches diameter and ~7 inches deep. It is in nice condition for