Airspeed Indicator, Maximum Allowable, Type L-7A w/Mach Limiter, Kollsman 1214DX Smiths

Airspeed Indicator, Maximum Allowable, Type L-7A w/Mach Limiter, Kollsman 1214DX SmithsThis is a Cold War era Airspeed Indicator, 0 650 Knots, Maximum Allowable, Type L 7A, made by Kollsman and used in aircraft of the US Air Force such as versions of the fighters F 86 Sabrejet, F 80 Shooting Star, F 84 Thunderjet, F 89 Scorpion, F 94 Starfire, trainer T 33, and versions of bombers B 47 and early B 52's (see illustration of B 52 panel). The main pointer rotates clockwise as the airspeed increases. The horizontally rotating drum above

There is a "0" above an "A" at center position

indicating a manufacturing date of 1942

The back screws off

and radio equipment

which indicates atmospheric pressure in inches of mercury

The loop was rotated by a control panel (such as the MN-28

The toggles do flip and the keying switch still has its spring action

This altimeter traversed the Sacramento Air Logistics center at McClellan Air Force Base in Nov 1982 (see label)

B-17 Flying Fortress

using a 10

A box containing magnets which may be turned to compensate for deviation is located on the bottom of the compass

and the vertical bar deflects to give an appropriate "fly right" or "fly left" indication