Slide Rule ('Unique' Navigational) and Case

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Aircraft navigational slide rule and case. -1 Ivory coloured slide rule made up of 3 parallel segments on top. The scales on either side are fixed whereas the sliding rule in the centre slides up and down. On top of these is another small transparent plastic slider with a line right down its centre. This small slider moves across the entire slide rule. On the back, are various conversion tables. There are scales along the edge too, one side marked from 0 ~ 75; the other side marked from 0 ~ 150. -2 Case - made of cardboard and coloured black. It has a snakeskin look texture.
Processed Material/Synthetic/Plastic
Processed Material/Paper/Cardboard
Signature/Marks and Type
'UNIQUE' Navigational Slide Rule
Made in England Printed
N.Z.414560 H.J.Burtt Hand-written
H.J.Burtt Hand-written
Accession No
Credit Line
Slide Rule ('Unique' Navigational) and Case, 1972.27.1. The Museum of Transport and Technology (MOTAT).

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