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A turn-and-bank indicator tells the pilot the attitude of the plane in the sky relative to the ground. This bank indicator uses a ball and curved glass tube to show rotation about the vertical axis. Gravity holds the ball to the lowest part of the tube, which moves from side to side as the airplane banks. The turn indicator uses a gyroscope to show rotation about the longitudinal axis. It has a pointer that indicates in degrees per unit of time the rate at which the craft is turning.
Date
c.1940
Country of Origin
United States of America
Type
INSTRUMENTS-Flight Management
Manufacturer
Longines-Wittnauer Watch Co. Physical Description
Double doghouse turn indicator and ball bank indicator.
Dimensions
Other (Face): 7.9cm (3 1/8 in.) Materials
Glass and metal Inventory Number
A19780408000
Credit Line
Gift of the Bendix Corporation
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
For more information, visit the Smithsonians Terms of Use.