Survey Aneroid Barometer, Short & Mason

English, c.1920, dial engraved 'Surveying Aneroid, No. A16346, Short & Mason, London Compensated' with dial engraved in feet running 0-10400ft and dial in inches running 21-31 inches, in leather case, barometer diameter12cm

Note: responsive to air pressure change, needle in centre of face, gearing to dial smooth, no noticeable damage