A fine 5 inch (12 cm.) lacquered brass, fully compensated aneroid barometer by Wilson, Warden & Co., LONDON. c.1915.
Marked with the broad arrow on backing plate, this fully functional barometer has bevelled glass, a knurled brass bezel to adjust for altitude (0-7000 feet), Compensated B and accurately measures from 24-31 inches of mercury (bag tested). Blued steel needle, outer ring measures atmospheric pressure to 1/10 and then 1/100th of an inch. Near perfect silvered dial. Serial number 4316. Heavy
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