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Capt. Field's Improved Parallel ruler: Flight Lieutenant Laurie Raymond Jones, 160 Squadron RAF
Technology
Wooden parallel ruler with bevelled edges and a pair of brass hinges. A protractor-style scale is marked on the upper edge of one rule, and compass points on the opposing edge. The ruler is missing th...REL48391
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Combined Protractor and Parallel Rule in cardboard container: Flight Lieutenant Laurie Raymond Jones, 160 Squadron RAF
Technology
Maker: W & G
Clear celluloid "Douglas" Combined Protractor and Parallel Rule in green cardboard sleeve. The front of the sleeve is printed 'W & G/ "DOUGLAS"/ COMBINED PROTRACTOR/ AND PARALLEL RULE/ AN ACCURATE IN...REL48390
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Dead Reckoning Computer in leather pouch: Flight Lieutenant Laurie Raymond Jones, 160 Squadron RAF
Technology
Maker: J B Carroll Company
Dead Reckoning Computer Type AN 5835-1 in brown leather pouch. Written on both sides of the pouch in black ink is 'L R JONES / B.C.P.A.'. The computer consists of two sliding black discs at the front ...REL48388
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Frewin Navigational Computer in leather pouch: Flight Lieutenant Laurie Raymond Jones, 160 Squadron RAF
Technology
Maker: W & G
Round cream celluloid Frewin Navigational Computer printed on both sides. One side has a central cream disc and clear celluloid arm which move against calibrations on the outer disc by means of a cent...REL48389