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06 May

Flag panel marine telescope – Gray & Keen, Liverpool.

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Quite large, single draw, measuring 20 inches long when closed and 34.75 inches fully open with ray shade, dust slider to the eye piece and coloured flag panel inset to the brown leather covered barrel. Signed near the eye piece, ‘Gray & Keen, Liverpool. Day or Night’ (they worked from 1847 – 1855). The lenses are damage free and the telescope gives an excellent clear image. The leather is intact. A little loss to the top of the horn covering Read More...
06 May

3 draw portable telescope in case – Baker, London.

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A brass 6 draw telescope signed on the first draw, ‘Baker, 244 High Holborn, London’, measuring 10.5″ closed and 32″ fully extended with a main lens of 2.25″ diameter. It has a leather covered taper barrel, sun visor, lens cap, dust slider to the eye piece and an additional pancratic eye piece tube with powers engraved for 25, 30 and 35 x. The lenses are damage free and the telescope gives a good, clear image. With tripod accessory and clamp Read More...
06 May

Four draw telescope – Ross.

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A four draw brass telescope, the first draw is engraved, ‘Ross. London. No 25758’. Also engraved with the initials, ‘B.M.’ (presumably the owner).   The telescope measures 26 cm when closed and 85 cm fully extended with a main lens of 42 mm.   The first draw is a pancratic  eye piece with indicated magnifications of 20, 25 and 30 x.   Very clear to look through with damage free lenses.   The number of the telescope (25758) estimates it’s production of around 1895. Read More...
06 May

MARITIME SEXTANT BY JAMES HENRY STEWARD. LONDON

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COMPRISES OF SILVER SCALE & VERNIER, SCALE DIVIDED IN 10′ MINUTE DIVISIONS, VERNIER READING TO 10″ SECONDS OF ARC, RADIUS 6.1/2″ INCHES, SIGHTING TUBE, WIDE ANGLE ERECTING SCOPE, LONG INVERTING SCOPE WITH TWO EYE-PIECES & CROSS HAIRS IN BOTH. TWO PUSH-ON FILTER CAPS, SCREWDRIVER AND MIRROR ADJUSTING KEY. ALL TELESCOPES HAVE INTERRUPTED THREADS AND MOST OF THE ACCESSORIES ARE NUMBERED 861 MAHOGANY HANDLE WITH IVORY BACKING FOR RECORDING  ALTITUDES/READINGS ETC. BAISE LINED MAHOGANY BOX 10″ x 9.1/2″ x 5.1/4″ Read More...
05 May

Early Victorian Cooke’s Drainage Level in Mahogany Case Retailed by L Casella & Co

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For sale, an early Victorian Cooke’s Drainage Level in original mahogany case retailed by L Casella & Co, London. This simple level engraved with Cooke’s Drainage level to one side of the barrel and to L Casella and Co to the other, has a short 18cm brass barrel with “superior telescope, cross lines etched on the glass and ball and socket joint” as described in Casella’s catalogue of 1860. It has an integral bubble level fitted within the top of Read More...
05 May

~WONDERFUL 18TH C. AMPUTATION SAW-EBONY GRIP~

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Measuring 15.5 x 3.5 inches (39 x 9 cm.), this rare survivor is in near perfect condition. No missing teeth to the 2 cm. wide, rectangular blade. Pinned to the distal end and adjusted to the proximal end by an ornate 18th century threaded, tightening key with stop. Smooth ebony grip is made for the right-handed surgeon as the finger grip is sloped in this direction. A few minor cracks (no instability) and one spot of oxidation are the Read More...
04 May

Pre Imperial Act Improved Portable Chondrometer by Robert Brettell Bate of 17 Poultry London

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For sale, a rare pre-Imperial “Improved Portable Chondrometer” by Robert Brettell Bate of 17 Poultry, London. This style of chondrometer or grain scale became largely popularised following an Act of Parliament on the 1st of January 1826 introducing the imperial form of measurement under George IV. The steelyard type scale was primarily used as a measure of the bulk density of grain and therefore quality of the product. Most examples come with separate stand, balance arm and measuring receptacle but Read More...
04 May

Edwardian Set of Avoir Standard Weights for The City of Liverpool by W&T Avery

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For sale, an Edwardian set of Avoir Imperial Standard Weights for The City of Liverpool by W&T Avery. The set includes all county standard Avoir Weights with 50lb, 20lb, 10lb & 5lb all clearly engraved to the top face and with the Avoir unit of measurement engraved below. Each weight has the manufacturer’s name of W&T Avery Ltd, Birmingham to one side, with the other reserved for the indenture mark of 990 and City of Liverpool for whom they were Read More...
03 May

~VERY FINE SMALL EQUINOCTIAL COMPASS/SUNDIAL-CASED~

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A very fine and working 2 1/2 inch (6.5 cm.) brass and silvered equinoctial compass/sundial in original maroon card case with monthly time corrections in lid. c.1850 Although unsigned, it is of the highest quality and rarely used. Reminicent of the Steward workshop, instead of wheat ear demarcations, it uses a winding ivy decoration. Victorian combination of maroon card case with royal blue interior. Both hooks and hinge intact (case a little scuffed). The instrument itself has all of it’s Read More...
02 May

Vintage Watson Bactil Brass Microscope with Polarising Accessories c1930, Cased

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Watson Bactil – circa 1930 Wide-body Model in Lacquered Brass with Matching Numbers and Nicol Prism Accessories This listing is for a superbly engineered vintage original Bactil model microscope in lacquered brass finish by W. Watson & Sons Limited of London.  It dates to 1930 based on the sequential Watson production number of 46144, which is engraved onto the main optical tube and comes complete with matching numbers storage case.   This inter-war example is in all-original condition as far as I Read More...
02 May

~FINE AND LARGE SILVER AND SHELL MAGNIFYING GLASS~

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A large (8 x 6 x 1 cm.) oval, Georgian hand magnifying glass in T shell and silver. Near flawless lens (a little dirty around edges but no scratches) in silver band with hinge and finger draw. Butterfly/clam shell sprays hand riveted to the covers. Fine overall condition. A rare survivor. Tight and folding construction made for the country gent. Wonderful office desk item. Not hallmarked but tests for silver (at least 90%, probably Sterling but many opticians were Read More...
29 Apr

SCARCE UNFOLDED (NEVER BOUND) GEOLOGICAL MAP BY J.S. HENSLOW, 1822

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HENSLOW, John Stevens (1796–1861) Geological Map of Anglesea Cambridge: Cambridge Philosophical Society, 1822 285 x 445mm, hand-coloured, together with two plates of parallel sections from the nw to se of the island, also hand-coloured, (3) A stunning hand-coloured geological map by John Stevens Henslow, printed to accompany his first published scientific paper – but here offered in its pristine unfolded state, having been retained by the Cambridge Philosophical Society as part of a collection of unissued archival materials. Although Henslow was to become most Read More...
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