A Victorian lacquered brass combined screw micrometer and goniometer Unsigned, late 19th century The tube applied with rotating circular platform adjusted via a knurled knob to upper surface against a Vernier degree scale to circumference, the centre applied with rectangular superstructure enclosing twin datum hairline wires adjusted via Vernier micrometer screws set at each end and enclosed under a protective friction fitted dust cap, 14.5cm (5.75ins) wide, in original fitted mahogany box with accessories, 18cm (7ins) wide; with a lacquered brass split field eyepiece micrometer, Dollond, London, mid 19th century, signed Dollond, London to underside, in original red leather covered box 7cm (2.75ins) wide; a lacquered and patinated brass microscope mechanical stage attachment, unsigned, late 19th century, with screw Vernier scale X and Y positioning in original fitted mahogany box, 19cm (7.5ins) wide; a lacquered brass direct vision hand spectroscope, John Browning, London, late 19th century, of cylindrical telescopic form signed John Browning, 63 Strand, London to exterior 9cm (3.5ins) long closed, in original leather covered sleeve case, and a lacquered brass hand spectroscope, R. and J. Beck Limited, London, early 20th century, signed R & J BECK LTD, LONDON to body, in original faux leather covered case, 7.5cm (3ins) wide, (5). Provenance: The Maurice Gillet collection of microscopy, inventory refs. G1001, G2550 and G3482. The Dollond family firm of Scientific Instrument makers was established by Peter Dollond who is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1680-1860 as born 1730 and died 1820. He was the son of John Dollond, a Huguenot silk weaver and started business as an optician in 1750. He was joined by his father in 1752 until his death in 1761, and then by his brother, John, until his death in 1804. The business was continued by Peter Dollond's nephew, George Huggins, who changed his name to Dollond. George Dollond became instrument maker to William IV and Queen Victoria, exhibited at the Great Exhibition in 1851 and died 1856. John Browning is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from various addresses in London from 1662 until after 1900; he was Optical & Physical Instrument Maker to Her Majesty s Government, The Royal Observatory and Kew Observatory . The partnership between Richard and Joseph Beck is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as first working from 31 Cornhill 1867-80 and then 68 Cornhill from 1868. They were best known for supplying microscopes and other optical instruments which were presumably constructed in their factory at Lister Works, Kentish Town, Holloway, East London. Banfield further notes that they often signed their instruments 'R & J Beck Ltd' from 1894.