Calculator - Course and Speed
Henry Hughes and Son Limited, Manufacturer
-2 A second or replacement plastic arm for the instrument. The arm fitted to the calculator is 240 mm H. This arm is 255 mm H. This fits into the side of the wooden box.
-3 Wooden box with wooden blocks, felt, foam fitted in the inside to house and protect the instrument. The box has a leather handle off the edge and also 2 metal loop clasps for securing the lid. Written on the side of the box is: Stores Ref. No.6B/125 Course and Speed Calculator Mk.IIA H. Hughes & Son Ltd. The box has been varnished. Scratched into the lid of the box is: S/Ldr Galbraith
-4 A page of paper, regarding compass
Stores EF No. 125/ Course & Speed Calculator MK II.A/ H. Hughs & Son Ltd. Ink Stamp
S/Ldr Galbraith Etched
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