A Royal Air Force Navigational Computer (Computor) Mk. Iii H And Manual Auction 1870-71 issue

1870-71 issue

original ribbon with embroidered insignia

INDUS 21 YRS"

each of which is slotted and secured by a common brass post

the son of of Henrik Grinstad and Sif

A Royal Air Force Navigational Computer (Computor) Mk. Iii H And Manual Auction 1870-71 issueWWII Royal Air Force Navigational Computer (Computor) Mk. III H and "Teach Yourself Air Navigation" Book : Navigational Computer with a black metal casing, brass face plates on both sides, obverse with a voided area in the centre with a clear plastic face plate, a white fabric air speed wind direction scroll containing various charts printed in red ink visible in the body of the computer through the clear face plate, the circular frame brass frame