Alexander Cumming
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Alexander Cumming FRSE was a Scottish watchmaker and instrument inventor, who was the first to patent a design of the flush toilet in 1775, which had been pioneered by Sir John Harington, but without
Alexander Cumming Clockmaker
Cumming's 1775 patent for a valve closet with an S-trap laid the foundations for the modern flush toilet.
Barograph
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A barograph is a barometer that records the barometric pressure over time in graphical form. This instrument is also used to make a continuous recording of atmospheric pressure. The pressure-sensitive
Alexander Cumming
…appointed a member of the commission set up in that year to adjudicate on John Harrison's ‘timekeeper for discovering the longitude at sea’". He made a barometrical clock for King George III, who paid him an annual retainer for its maintenance. Other barometrical clocks created by him are at the Science Museum in London…
A traditional barograph, without its protective case
A barograph fitted with five aneroid capsules stacked in series, to amplify the amount of movement
A sailplane barograph in its case
Three-day barograph of the type used by the Meteorological Service of Canada