A Regency brass swinging-arm protractor Thomas Jones London, early 19th century The 7 inch wide D-shaped plate with silver scale insert calibrated for degrees to circumference and signed Thomas Jones 62 Charing Cross London to lower edge, fitted with brass swing-arm pivoted at the centre of the arc incorporating aperture with vernier insert over the scale and extended rule terminating with a short axis-centre marking edge, in original mahogany box applied with paper trade label Thomas Jones (Pupil of Ramsden) ASTRONOMICAL, and, Philosophical, INSTRUMENT MAKER, To His Majesty &, the hon'ble Board of Ordnance., 62 Charing Cross, LONDON to inside of lid, the box 27.5 (10.75ins) wide. Thomas Jones is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as apprenticed to Jesse Ramsden in 1789 for whom he is believed to have worked until setting up on his own at 120 Mount Street, Berkeley Square, London in 1806. He operated from several other London addresses including 62 Charing Cross from 1816 and took his son of the same name into partnership in 1831 (which only lasted four years). His final address is recorded by Clifton as being at 4 Rupert Street, Coventry Street, London where he is noted as working 1851-59.
A Regency brass swinging-arm protractor Thomas Jones London, early 19th century The 7 inch wide D-shaped plate with silver scale insert calibrated for degrees to circumference and signed Thomas Jones 62 Charing Cross London to lower edge, fitted with brass swing-arm pivoted at the centre of the arc incorporating aperture with vernier insert over the scale and extended rule terminating with a short axis-centre marking edge, in original mahogany box applied with paper trade label Thomas Jones (Pupil of Ramsden) ASTRONOMICAL, and, Philosophical, INSTRUMENT MAKER, To His Majesty &, the hon'ble Board of Ordnance., 62 Charing Cross, LONDON to inside of lid, the box 27.5 (10.75ins) wide. Thomas Jones is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as apprenticed to Jesse Ramsden in 1789 for whom he is believed to have worked until setting up on his own at 120 Mount Street, Berkeley Square, London in 1806. He operated from several other London addresses including 62 Charing Cross from 1816 and took his son of the same name into partnership in 1831 (which only lasted four years). His final address is recorded by Clifton as being at 4 Rupert Street, Coventry Street, London where he is noted as working 1851-59.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
