An early 20th Century Russian barometer with thermometer graduated in C and F with silvered ring dial with cyrillic lettering and arabic numerals mounted in the boss of a mahogany four blade propellor variously stamped T 6293 2610 F Tibbenham Ltd 12 cyl RAF 4A BE12 5.4.17 and with the War Dept Broad Arrow. Dial dia -- 7 3/8in. (18.8cm)