Course & Speed Calculator and Case
Maker and role
Hall Telephone Accessories (1928), Manufacturer
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Object detail
Accession number
2004.676
Production period
Description
-1 Instrument with black rectangular base. Attached to one side is a clear plastic strip with a number scale to 360, below which is a metal and white plastic disc with a number scale around the outside. On the reverse are 2 black discs, one on top of each other, with the one below able to rotate. On the top disc it says: "Course & Speed Calculator, Mk IIA, H.T.A. (1928) Ltd. A.M 6B/125".
-2 Rectangular wooden box with hinged lid and 2 latches to close it. It also has a leather handle. The box is made of different shades of wood and the corners are joined with tongue and groove joints. The interior of the lid has 2 rectangular foam pieces glued to it and the base is lined with green felt. There are several square raised areas in the box.
-2 Rectangular wooden box with hinged lid and 2 latches to close it. It also has a leather handle. The box is made of different shades of wood and the corners are joined with tongue and groove joints. The interior of the lid has 2 rectangular foam pieces glued to it and the base is lined with green felt. There are several square raised areas in the box.
Brief History
Computer capable of calculating course, fuel consumption, airspeed, drift, converting miles per hour to knots.
Marks
STORES REF No. 6B/120 / COURSE & SPEED CALCULATOR / MK II A / H.T.A. (1928) LTD / SERIAL No. Ink Stamp
Media/Materials
Collection
Credit Line
Hall Telephone Accessories (1928). Course & Speed Calculator and Case, 2004.676. The Museum of Transport and Technology (MOTAT).
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