Navigational Computor, Mark III D*, Ref No. 6B/180

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This World War II Navigational Computor, Mark III D*, Ref No. 6B/180 was for use in aeroplanes and provided a rapid means of solving problems involving the effect of wind on the track and ground speed of an aeroplane. These, together with interception problems, are solved geographically by constructing a vector triangle. A height and airspeed computor, calibrated for either isothermal of I.C.A.N. readings, is incorporated. The computor was worn on the knee of the user by two straps that are no longer present.

The example in our collection appears to have been used in the postwar period by a commercial pilot, C.T. Oman who worked for British United Airways at Stansted Airport.

Date: Unknown

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This exhibit has a reference ID of CH50888. Please quote this reference ID in any communication with the Centre for Computing History.


Navigational Computor, Mark III D*, Ref No. 6B/180

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