THREE GILT BRASS ANEROID POCKET BAROMETERS WITH ALTIMETERSSHORT & MASON, L.H. LEON &PANY AND UNSIGNED, LONDON, LATE 19th CENTURYThe first with 1.75 inch circular silvered register incorporating curved mercury tube Fahrenheit thermometer beneath inscriptionPENSATED FOR TEMPERATURE, SHORT & MASON, LONDON, MADE FOR A. & N.C.S., WESTMISTER to centre, within concentric scale calibrated in barometric inches divided for twentieths and rotating outer concentric altimeter calibrated in feet 0 to 8000 with divisions for every fifty feet; the second with 1.5 inch register inscribedpensated, L.H. Leon & Co., 167 PICCADILLY within similar barometric and rotating altimeter scales, both in watch-type cases with milled band for the rotating bezels and spension ring, the Short and Mason also with leather covered protective outer case; the third with 2 inch register inscribed Hutchinson's Improved, Surveying Aneroid over Keep the eye level with the needle, In ascending the point of the needle goes up, In descending it moves down, to centre within concentric barometric scale and movable altimeter scale annotated 0 to 1000 feet in two directions for up and down, the cylindrical case with rotating bezel and thumb-piece to left hand side, (3).The instruments 5cm (2ins) diameter, 2cm (0.75ins) deep; 4cm (1.625ins) diameter, 1.2cm (0.5ins) deep; and 5cm (2ins) diameter, 2cm (0.75ins) deep respectively.Provenance: The archive collection of Barometer World Meum, Merton, Devon.The firm of Short and Mason are recorded in Banfield, Edwin BAROMETER MAKERS & RETAILERS 1660-1900 as operating from 62 Hatton Garden, London 1873-75 then 40 Hatton Garden from 1876. They were leading makers of barographs and aneroid barometers well into the 20th century later merging with Taylor Instruments in 1969.L.H. Leon andpany do not appear to be recorded in the ual sources hence it is likely that they were most likely retail jewellers.