An open scale Micro-barograph by Short & Mason of London in enameled glass case.
Seven day clockwork drive by Horstmann Gear Co Ltd, of Bath. Serial number: 7027/59
With Meteorological Office “MO” logo.
Meteorological Office calibration certificate dated 27.6.96
Literature: Barometers - Aneroid and Barographs, Edwin Banfield, 1985. page 131 fig. 116.
Short and Mason Ltd:
Established in 1875 by Thomas Short and James Mason as Short & Mason, trading at 40 Hatton Garden, London, They made and sold barographs, aneroid barometers, compasses, aviation instruments such as altimeters, indicators and gauges.