Details and Image
|Type||Model #.||Aircraft Maker / Name||Instrument Maker||Country||Construction||Date||Scale Length||Area of Use
|Disk||Matrix Rule||Generic||North American Aviation||U.S.A.||Plastic||c. 1955||dia. = 16.8 cm||Aerospace Industry
Comment: "1) Used to transpose vectors, points, trajectories etc. from one coordinate system or set of XYZ axes to another. 2) Changing frames of reference was critical for aerospace and military engineers when working with bodies in flight, or orbit. 3) It was used to relate the frame of reference for a missile in flight to the reference frame of the earth or another missile in flight."