Sight, Drift & Ground Speed, Gatty

Looking down through it at the ground, a navigator measured how fast and how sideways the airplane was actually moving.

Date

ca. 1931

Maker

Louis Levin & Son Inc.

Place

United States of America

Materials

Instrument: Non-ferrous metal, steel, aluminum, glass, brass, natural rubber; Case: Wood, synthetic fabric, steel, aluminum, leather; Round case: steel, paint, cotton, cardboard, glass, adhesive

Dimensions

3-D (Sight): 34.3 x 22.9 x 10.2cm (13 1/2 x 9 x 4 in.); 3-D (Case): 27.3 x 37.5 x 12.1cm (10 3/4 x 14 3/4 x 4 3/4 in.)

Museum

National Air and Space Museum

Credit line

Transferred from the Department of Commerce

Type b2 gatty;210mm l;115 w ; 340mm h

The museum's own record (Smithsonian, National Air and Space Museum)

Also answering “Where am I?” see all

Receiver, Radio Range, ARC, Lab Prototype, Model BDead Reckoning, E-6B, PrototypePlotting Board, Navy, Mark 3ASextant, Brandis, with Willson Bubble Telescope, EarlyPlotter, DriftDry Card Compass with BinnacleLiquid CompassSextantEquatorial SextantSolar CompassJames Wilson's Terrestrial Globe, 1811Pocket compass from the Lewis and Clark Expedition, 1804-1806