A sensitive altimeter measured the altitude of an airplane above sea level and allowed that reference to be set by a knob. This is the first model produced by Kollsman. Doolittle used the same type of altimeter in his historic 1929 "blind flying" test flight.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
1931
United States of America
INSTRUMENTS-Flight Management
Kollsman Instrument Company
80mm diameter, 170 long; range 0 to 20000; black with white figures; 1931.
3-D: 9.5 × 7.5 × 9.2cm (3 3/4 × 2 15/16 × 3 5/8 in.)
Metal, rubber, paint, glass, radium paint
A19570042000
Transferred from the Department of Commerce
National Air and Space Museum
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