Torpedo spreading slide rule by Betta

Torpedo spreading slide rule by Betta



Case dimensions: 36.5 x 21.5 x 3.5 cm.


Early 1960's


Betta Manufacturing Co

Country of manufacture

UK and Ireland

Categories: Maritime, Scientific, Technology, Calculating


An early 1960’s torpedo spreading slide rule by the Betta Manufacturing Co, Eaton Bray, Dunstable.

In oak case with a brass plate with the Air Ministry mark: SLIDE RULE MK.I. FOR T.C.F.S. MK. *


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GB Hatchwell Antiques

Hatchwell Antiques is based at 533 King's Road, Chelsea, London.
Members of LAPADA, BADA & CINOA.

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