A fine and rare George II brass screw-barrel portable microscopeto Thomas Wright London, 2nd quarter of the 18th century The decoratively pierced and moulded barrel with objective lens opposing threaded insert fitted with an condensing lens, the interior section moving against a spring loaded horn specimen clamp for focusing, with finely turned threaded baluster-shaped ivory handle and in plush-lined fishskin covered box, with an extensive series of accessories including four additional spare objectives, simple microscope attachment, turned ivory talc box, four ivory sliders, and a set of tweezers, the box 15.5cm wide; together with original printed booklet THE DESCRIPTION and USE Of a SET of Portable MICROSCOPES with fold-out page engraved with A View of the Several Parts of a Portable Microscope and incorporating trade label Sold by THOMAS WRIGHT Mathematical Instrument Maker to His Royal Highness the PRINCE of WALES, at the Orrery & Globe next ye Globe & Marlborough head Tavern in Fleet Street, London. Thomas Wright senior is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as working form The Orrery and Globe, Fleet Street, London 1718-47. He received a Royal appointment to the Prince of Wales, and then to George II in 1727. The screw-barrel microscope was invented at the end of the 17th century by the Dutchman Nicolaas Hartsoeker (1654-1725) and was introduced to England by James Wilson An account of the screw-barrel microscope first appears in John Harris's 1704 publication Lexicon Technicum. Condition report disclaimer
A fine and rare George II brass screw-barrel portable microscopeto Thomas Wright London, 2nd quarter of the 18th century The decoratively pierced and moulded barrel with objective lens opposing threaded insert fitted with an condensing lens, the interior section moving against a spring loaded horn specimen clamp for focusing, with finely turned threaded baluster-shaped ivory handle and in plush-lined fishskin covered box, with an extensive series of accessories including four additional spare objectives, simple microscope attachment, turned ivory talc box, four ivory sliders, and a set of tweezers, the box 15.5cm wide; together with original printed booklet THE DESCRIPTION and USE Of a SET of Portable MICROSCOPES with fold-out page engraved with A View of the Several Parts of a Portable Microscope and incorporating trade label Sold by THOMAS WRIGHT Mathematical Instrument Maker to His Royal Highness the PRINCE of WALES, at the Orrery & Globe next ye Globe & Marlborough head Tavern in Fleet Street, London. Thomas Wright senior is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as working form The Orrery and Globe, Fleet Street, London 1718-47. He received a Royal appointment to the Prince of Wales, and then to George II in 1727. The screw-barrel microscope was invented at the end of the 17th century by the Dutchman Nicolaas Hartsoeker (1654-1725) and was introduced to England by James Wilson An account of the screw-barrel microscope first appears in John Harris's 1704 publication Lexicon Technicum. Condition report disclaimer
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
