| Categories » Nautical and Scientific instruments : |
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A late 19th century British vernier sextant signed D. McGregor Glasgow SOLD the lattice frame with pillar constructed in oxidised brass and signed on the arc, the inlaid silvered scale divided 5-0-150 degrees, sliding magnifier to vernier, fine-screw adjustment, seven shades, mirrors and mahogany handle, all contained in a fi... |
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An 18th century brass octagonal compass sundial signed Maulevant Paris, the horizontal plate engraved hours for latitudes 51 to 39 degrees, with spring-loaded bird gnomon, with latitude arc engraved 40 to 60 degrees, the underside engraved with latitudes of twenty-eight continental cities and towns, the compass with blued iron needle and br... |
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An American eight-day Deckwatch chronometer by Waltham Watch Co. ca. 1920 silvered dial Arabic hour numerals, subsidiary seconds and up-and-down dials, blued steel hands, gimballed brass bowl, three-tier brass bound mahogany box, inserted brass plaque signed Waltham. 12.5x12.5x13cm... |
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A 19th century eight day mahogany marine chronometer, James McCabe London ca. 1870 silvered dial signed and numbered Royal Exchange London No 332. Roman numerals, subsidiary seconds and up-and-down dials, blued steel hands, lacquered fusee with Earnshaw escapement, gimballed in brass bowl, three tier brass bound mahogany box, the middle section with vacant ivory plaque, bras... |
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A fine early 19th century Telescope by Dollond London A four draw mahogany and silvered brass telescope signed Dollond London complete in Moroccan leather coloured case. ca. 1820 ... |
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An English Wimshurst electrostatic induction generator ca. 1895 the
electrostatic Wimshurst has a mahogany frame with two large glass
plates (diameter 45cm), nickel-brass conductors, combs, brushes, two separate removal
Leyden glass jars. In perfect condition and working order. height 61cm
width: 43cm deep 36cm ...... |
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Rare American Induction machine by Töpler ca.1890 This model of an electrostatic induction generator, very much in vogue
for electromedical purposes towards the end of the nineteenth century,
is based on the principles of electrophorus and duplicator function. It
is derived from the mechanical improvements made between 1865 and 1880
by the phys... |
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A rare English Culpeper-type Microscope Mathew Loft type ca.1740 Unsigned, the octagonal ebonised base supporting plano concave mirror and three legs with a slight bow terminating in a shaped triform stage plate mounted stage forceps, with three shorter legs supporting the body of the microscope, the microscope body tube constructed from paper lined lignum vitae ... |
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A brass Culpeper-type microscope. A Fine English Culpeper-type microscope signed Silberad Aldgate London. ca. 1800, the brass body tube with rack and pinion focusing mounted on the outer sleeve, projecting a further three scroll legs, on mahogany square base with fitted piano concave mirror and drawer containing accessories includin... |
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An 18th century English brass Cuff-type monocular compound microscope. the body-tube with eyepiece and objective, attached via a limb to main column, the column graduated 1-6 for the rack- and pinion adjustment to the Cuff-type three arm stage, with swivelling substage plano-concove mirror, raised via a compass joint from the base of the fitted mahogany carrying case, ... |
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An English 18th century brass-cased Compass A nice Brass-cased compass by Springer Bristol, with printed black & white paper with blued iron needle, brass cap, diameter 6.5cm ca. 1790.... |
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An English Could type pocket microscope ca.1840 Unsigned, the tapering brass tube with simple screw rack and pinion focusing and attachment for screwing in to the lid of a mahogany case, the case containing accessories including bone and boxwood specimen slides, forceps and additional eyepieces. ... |
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