A RARE MINIATURE GOLD ANEROID POCKET BAROMETER WITH ALTIMETERPILLISCHER, LONDON, LATE 19th CENTURYThe 0.675 inch circular silvered register calibrated in barometric inches divided into tenths and signed PILLISCHER, LONDON to centre within outer rotating altimeter scale calibrated for 0 to 5000 feet divided for every hundred feet set behind slightly convex glass, the case with engine-turned back and spension post incorporating knurled crown for adjting the altimeter scale within the spension loop.2cm (0.75ins) diameter, 0.8cm (0.375ins) deep.Provenance: The exhibition collection of Barometer World Meum, Merton, Devon.Moritz Pillischer is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as working from 398 Oxford Street 1851-53 then 88 New Bond street, London 1854-87. He was succeeded by his Nephew, Jacob.The very small size and the e of gold for the case of the current lot suggests that was perhaps intended as a demonstration example to show the maker's capability.