Indicator, Turn and Bank, A-11


Display Status:

This object is on display in the General Aviation exhibition at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Collection Item Summary:

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.

Collection Item Long Description:



Inventory Number


Physical Description

Double doghouse turn indicator and ball bank indicator.

Credit Line

Gift of the Bendix Corporation

Country of Origin

United States of America


Glass and metal


Other (Face): 7.9cm (3 1/8 in.)

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


INSTRUMENTS-Flight Management

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