Found in collection. Donor unknown at this time. Found on NASM premises.
Dimensions:
3-D Test: 22.9 x 25.4 x 1.3cm (9 x 10 x 1/2 in.)
Physical Description:
Black metal for instruments, indication on panel , (300 mph max, Airsped, Altitiude Sacle. Airspeed.)