Code: M24411
By Aston & Mander & Co. London. 1944 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. Light scratches/marking but in very good overall condition. As used by the Navigator for route plotting in bomber aircraft. Stock code M24411.
