Air Ministry parallel rule, 1941

Air Ministry parallel rule, 1941

Code: M22746

£50.00 Approx $61.73, €56.88
 

By Aston & Mander & Co., London.  1941 dated.  'Capt. Field's Improved' boxwood parallel rule with brass fittings.  Approximately 45cm in length x 6.8cm wide when closed.  Clear Air Ministry and crown markings.  It has been fitted with a brass locking bar.  The rule has a few small edge bumbs and light scratches but in good overall condition.  As used by the Navigator for route plotting in bomber aircraft.  Stock code M22746.