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Lot 106
A small group of cameras including Asahi Pentax ME with SMC Pentax-M 1:1.7 50mm lens, Ilford Sportsman camera with Dacora Dignar 1:3.5/45mm lens, an SMC Pentax-M 1:4 200mm zoom lens and Prinz 880C flash unit etc, also a pair of Zenith Tempest 8x40mm binoculars, majority of items cased, also a small group of British and international low denomination 20th century coinage and small group of costume jewellery.
Lot 6
A Cary/Gould-type lacquered brass portable compound microscope, unsigned, circa 1840 The part-tapered tube screw-fitting at the objective end into a threaded collar positioned at the top of a square section upright cut with teeth for the rack and pinion up/down adjustment of the stage, the platform fitted with sprung brass object retaining plate complete with tool post holes to leading edge, with pivoted plano-concave mirror applied to the cylindrical base section beneath, the whole mounted via a threaded recessed collar into the lid of the original mahogany box containing accessories including five objective lenses, forceps, specimen holder, and substage condenser lens, the case 16cm (6.25ins) wide. The design of the current lot was devised during the early 1820's by William Cary (1759-1825) and was subsequently published by his former apprentice, Charles Gould, in his 1827 publication THE COMPANION TO THE MICROSOPE . An almost identical instrument was sold in these rooms on 15th September 2015 (lot 9) for £420 hammer.
Lot 8
A lacquered brass Withering type botanical microscope, unsigned, 19th century With objective lens mounted via twin turned uprights above an up/down adjustable circular stage with threaded central aperture carrying a condenser lends and drilled to take specimen forceps to circumference, on conforming base with pivoted plano-concave mirror between and incorporating further screw thread aperture to centre, complete with specimen forceps and two additional objective lenses, 7.5 cm (3ins approx.) high; with original tan leather covered cylindrical case, 12.5cm (5ins) high overall. The basic form of relatively simple portable botanical microscope included in the current lot was developed by Dr. William Withering (1741-99). Originating from Birmingham and an active member of the Lunar Society, Dr. Withering first described this form of microscope in his 1776 work A Botanical Arrangement of all the Vegetables Naturally Growing in Great Britain.
Lot 7
A Cary/Gould-type lacquered brass portable compound microscope, Cary, London, circa 1825.The part-tapered tube screw-fitting at the objective end into a threaded collar positioned at the top of a square section upright cut with teeth for the rack and pinion up/down adjustment of the stage and engraved Cary, London, the platform fitted with sprung brass object retaining plate with pivoted plano-concave mirror applied beneath, the whole mounted via a threaded recessed collar into the clasp area of the open mahogany box containing accessories including forceps, Lieberkühn and condenser lens complete with dismantlable post, the case 9.5cm (3.75ins) wide. The current lot was probably made by William Cary who is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as born circa 1759 and apprenticed to Jesse Ramsden. Cary worked from 272 Strand, London 1789-90 then 182 Strand 1794-1822, he died in 1825. The firm was continued by his successors trading from 181 Strand until 1891. The design of the current lot was devised by Cary during the early 1820's and was subsequently published by his former apprentice, Charles Gould, in his 1827 publication THE COMPANION TO THE MICROSCOPE. A very similar instrument to the current lot also by Cary was sold in these rooms on 15th September 2015 (lot 8) for £320 hammer.
Lot 38
A French rhodium or chrome plated brass camera lucida, P. Berville, Paris, circa 1900 With two-draw telescopic arm fitted with universal pivot carrying small glass prism inset into an oxidised carrier incorporating a slot to carry one from a choice of eleven glass lenses/slides present with the lot, the opposing end with thumbscrew clamp for fitting to the edge of a table incorporating lockable pivot for the arm and inscribed CHAMBRE CLAIRE UNIVERSELLE, MODELE DEPOSE, P. BERVILLE - 25 Chausee d’Antin. PARIS, in red velvet lined fabric covered case further stamped with makers name to the inside of the lid, the box 28cm (11ins) wide; with a German stainless and japanned steel planimeter, inscribed Maho No. 60, early 20th century, of Polar type with tracer and arm incorporating Vernier scale within frame incorporating measuring wheel, dial, support wheel and pivot for the pole arm terminating with pinned anchor weight, the pole arm inscribed Maho No. 60, in purple velvet lined fabric covered case, 26cm (10.25ins) wide, (2). The camera lucida allows an artis/draughtsman to trace the form of a three-dimensional object by viewing a reflection of the object via the prism and lens assembly connected to the end of the telescopic arm. The design was patented by William Hyde Wollaston in 1806 although the principals of the instrument had been outlined by Johannes Kepler in his Dioptrice in 1611.The planimeter allows the area of a shape to be measured by tracing around its outline and has historically proven useful in cartography and surveying photography. The polar planimeter was developed in 1854 by The Swiss mathematician Jakob Amsler-Laffon although the design had been pioneered by Johann Martin Hermann in 1814.
Lot 10
Ï’An English lacquered brass portable aquatic microscope, unsigned, second quarter of the 19th century With square section post fitted with lens above friction sliding up/down adjustable stage with ivory slip insert and tool post holes to rim, with pivoted mirror beneath and mounted via a sliding socket onto an oval brass foot, the velvet lined maroon morocco leather covered box with accessories including two additional lenses, forceps, tweezers, a specimen capsule and three bone sliders, 11cm (4.25ins approx.) wide. The design of the current lot is probably derived from a model developed by John Ellis in around 1752. The main difference being that the current lot focuses by up/down movement of the stage rather than the lens. Ï’ Indicates that this lot may be subject to CITES regulations when exported. Please see our Terms & Conditions for more information.
Lot 12
A group of small optical instruments, various makers, mainly early to mid 20th century.To include a lacquered brass spinthariscope with threaded lens section enclosing specimen holder adjusted via a knurled screw protruding through the base rim and inscribed SPINTHARISCOPE, W. CROOKES, 1903, 4cm (1.5ins) long, cased; a French chronoscope with lens cap enclosing a bulls-eye plano-convex lens opposing sprung magazine of paper tints, the exterior with slot to take a drilled disc to the side and inscribed PAP, CHRONOSCOPE, BREVETE EN TOUS PAYS to end cap, 4.5cm (1.75ins) long, cased; a lacquered and japanned brass portable microscope with eyepiece over sprung slide aperture and fixed oculus to the tube slotting into a cylindrical base incorporating pivoted mirror, in small beize-lined case with tweezers, specimen pin and three slides, the box 9.5cm (3.75ins) wide; a German scale magnifier with eyepiece tube friction slide fitted within stand terminating with an aperture incorporating a scale edge annotated in tenths 0 to 0.5 inches dived into two hundredths of an inch, the side with trademark HENSOLT, WETZLAR, 5cm (2ins) approx. high; and two other items, (6). The spinthariscope is a device for observing individual nuclear disintegrations caused by the interaction of ionizing radiation with a phosphor. The design of the instrument was devised by Sir William Crookes in 1903 and, as with many inventions, the concept came about accidentally. Whilst observing the fluorescence that alpha rays from radium produced on a zinc sulfide screen some radium was accidentally spilt, eager to locate and recover it, Crookes inspected the screen under a microscope. Rather than the expected uniform glow, he observed discrete flashes of light with each flash being produced by an individual alpha particle. Crookes named the instrument the Spinthariscope from the ancient Greek word for scintillation, a name that befits the ‘magical’ nature of the phenomenon which it is designed to demonstrate. The chronoscope is a form of photographic Actinometer which is designed to produce a small negative of a subject onto a piece of sensitive paper held within the magazine within the instrument. The initials PAP inscribed on the example in the current lot stand for Photometre Automatique Parfait and the design was conceived by Paul Boucher in around 1900.
Lot 9
Ï’ An English lacquered brass and ivory W. and S. Jones pattern portable compass microscope, unsigned, circa 1800 With turned ivory handle and opposing lens folding onto frame cut with sprung slot to take specimen slider, 9cm (3.5ins approx.) long open; 7cm (2.75ins) long closed, in original leather covered two-part sleeve case, 8.5cm (3.25ins) long overall; with another similar, unsigned probably mid to late 19th century, in leather slip case, 7cm (2.75ins) long overall; and a hand-held magnifier, unsigned, mid to late 19th century, with slender baluster-turned ivory handle, 7cm (2.75ins) approx. long, (3). The design of the first item in the current lot was published by W. & S. Jones in 1798. The partnership between the brothers William and Samuel Jones is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as operating from several addresses in Holborn, London 1792-1859 (including 30 Holborn 1800-1860). A similar Instrument was sold in these rooms on Wednesday 16th February 2011 (lot 7) for £350 hammer. Ï’ Indicates that this lot may be subject to CITES regulations when exported. Please see our Terms & Conditions for more information.
Lot 400
Zenza Bronica System to include: Bronica ETRsi body with 2 x filmback magazine 120, AE-lll Prism Finder E, Grip, Focusing screen Ei, Polaroid land pack film back. Bronmica ETRS body and viewfinder with 1 x filmback magazine 120. Bronica lenses etc ; 40mm f4, 75mm f2.8, 160mm f3.5,250mm f5.6,2 x teleconverter, bellows. Plus various Bronica accessories, lens hoods, filters etc, Hakuba HD-833V tripod and Jessops case.
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70728 item(s)/page