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RAF course & speed calculator Mk.IIA

RAF course & speed calculator Mk.IIA

Code: M23623

£32.50 Approx $40.73, €36.15
Qty 

Stores Reference 6B/125.  By H.T.A (1929) Ltd.  Metal construction with sliding scale for airspeed and scales to allow for drift and distance etc.  It is soiled and shows use and wear.  Note that the perspex rule has broken and been glued - see photographs.  Fair condition.  Used by Navigators to calculate their routes.   Stock code M23623.