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Click here to subscribeAn English lacquered brass and ivory W. & S. Jones pattern portable microscope Unsigned, circa 1800 With turned ivory handle and opposing lens folding onto the frame cut with a sprung slot to take the specimen slider, 10cm high open, 7cm long closed, in original red leather covered box, 8cm long. The design of the current lot was published by W. & S. Jones, London in 1798.
A fine and rare George II brass screw-barrel portable microscope Attributed to 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.
An unusual ivory and brass portable microscope Unsigned, probably early 19th century With simple and compound objective lenses mounted opposing each other at each end of the instrument separated via twin brass uprights with fixed brown-stained stage between, the rim of the stage and compound lens end of the instrument now pierced to take various tools (lacking), 7cm high, in black japanned wooden cylindrical case, the box 7.4cm high overall. The basic form of this relatively simple portable microscope bears similarities to a model developed by Dr. William Withering (1741-99) published in his 1776 work A Botanical Arrangement of all the Vegetables Naturally Growing in Great Britain (see lot 1). However the current lot differs in that the stage appears to be fixed but in a way as to be located at the focal length for both opposing sets of lenses. Therefore, in order to alter the magnification, the specimen would need to be removed from the stage and the instrument inverted with the specimen then placed on the reverse side of the stage before viewing through the second lens.
A near pair of early 19th century silver mounted and shagreen boxes and covers each of circular form, simple silver mounts with beaded and rope twist borders, hardwood interiors, together with an early 19th century brass and shagreen cased single draw pocket telescope, each lens with sliding cover 7.2cm diameter and 3.7cm and 3.5cm high
A late George III lacquered brass Cuff-type compound microscope, with concave square stage, adjustable slide with bracing bracket to rear on a fitted mahogany base with two sided mirror and base drawer, containing spare lens and ivory slides, in a mahogany case with additional drawer, 14.5ins
Eight Mixed Cameras:- Nikon Nikonos underwater camera, with Nikkor f2.8/35mm lens; Ihagee Parvola with Xenar f3.5/70mm lens, cased; Ihagee Parvola with Antistigmat f4.5/70mm lens; Voightlander Vito B, cased; Bencini Comet S, cased; Canon Dial 35, cased; Kodak Premoette Junior; Zeiss Ikonta Baby 520/18, cased
A Rare Talbot & Eamer Model C 1/4 Plate Box Camera, the black leather covered wooden body inset with brass plaque `R.B.Miral, Model C, Talbot & Eamer`, with pull cord in base for operating shutter, lacquered brass Wray 5 x 4 lens no.5289, together with eight plate holders, in two canvas cases
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