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18 Nov

three draw telescope.

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19th century telescope measuring 82 cms long fully open and 29 cms when closed with an objective aperture of 32 mm. It has an end cap and eye-piece dust slider. Magnification is 20 x. Very clean giving a fine, sharp image.   Read More...
17 Nov

MARQUOIS SCALES SET

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The box contains a boxwood square and two boxwood rules. The scales on the rules range between 20 and 60 with matching offsets.  Manufactured by W Cox Devonport.  It has an additional name Charles Schofield, who was  probably the owner. One offset has a chip on one edge Read More...
11 Nov

Compass sundial Watkins Bristol

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Cased pocket compass and sundial by Watkins Bristol, England of the 1820’s. Signed on the compass as well as the sundial. The compass has a diameter of 6,5 cm. The compass rose is very detailed and he metal is coloured blue. To set the compass a click-system is installed. When clicked the arrow will be pushed a little and is set to the right direction. The sundial is set by two pinholes and can be clipped upwards. Case dimensions: 7,8 Read More...
10 Nov

Richardson’s Sphygmograph

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This device is a modification of the Dudgeon, but with a 2 inch rod which extends and has an adjustable weight to adjust the pressure rather than a screw spring. The clockwork mechanism turns the smoked paper on a rod drive. the rod has a series of plates to mark the paper and provide a scale of height. See N. H. Naqvi and M. D. Blaufox page 110. Case lid distressed as shown-Label for retailer ‘Medicinisches Waarenhaus, Berlin’-most likely manufactured Read More...
03 Nov

Small spyglass telescope, early 19th c.

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An early 19th century single draw, two power eye-piece spyglass. The eye-piece has a small lever with markings ‘1 and 2’ which changes the magnification approximately 4 x to 6 x power. It gives a clear image but limited field of view ( not much different to a small set of opera glasses). Opened, it measures 5″ (13 cms) and 3.5″ (9 cms) when closed with  an achromat lens of 1″ diameter. It has a screw-on lens cap. Read More...
02 Nov

W F Stanley plain theodolite

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The Theodolite is  contained within its original mahogany box. The serial number is 9225 suggesting a date of 1892. It retains its  original spider web on the diaphragm in the telescope.  During my apprenticeship in the 1960s at  W F Stanley the senior instrument makers spoke of repairing theodolites and obtaining the spider web by knocking a spider off the edge of the bench and gathering it on a V-shaped prong, then applying the web to the diaphragm with Read More...
01 Nov

~EXCELLENT W. JONES TRANSITIONAL SIMPLE MICROSCOPE~

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An excellent and complete Jones-type simple botanical microscope of the popular Adams/Jones type with modifications. As you know, when Jones bought up the Adams publications, Adams had an early design for a simple field microscope that was then produced by William Jones. Originally on an oval ebony base with a cumbersome pin to the pillar and three lenses that flipped in and out of the optical axis, the model was unchanged for 20 years. We then see a heavier brass Read More...
31 Oct

~FINE SINGLE ARM CIRCULAR PROTRACTOR-W. & S. JONES~

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A fine cased six inch diameter, engine divided, circular single arm protractor by W. & S. Jones with vernier and pin. 360 degrees in half degree increments. Vernier reads to a tenth of a degree. Finely engraved. Nice signature. c.1800. Rarely if ever used. Near perfect lacquer. In green baise lined mahogany case with booth hooks and eyes present(7 x 6 1/2 inches, 17.5 x 16 cm.)   Read More...
30 Oct

~EXCEPTIONAL SWIFT MICROSCOPE LAMP-RARE COMBINATION~

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An exceptionally rare and fine example of a James Swift microscope lamp. Signed on the ceramic chimney shade “James Swift, 48 University St., London, Registered” (earliest address), this lamp stands 12 inches tall on a round brass base. The golden lacquer is virtually intact although the accessory HAS been used. It boasts a combination of a plano/concave BLUE glass bullseye, a BLUE glass burner chimney and the earliest chocolate BROWN chimney shade (1855). Fully adjustable both vertically and horizontally Read More...
27 Oct

Medical Coil by Frederick Parkes, Medical Electrician

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A good medical galvanic coil with brass strength adjuster and associated pamphlet, in good condition noting minor losses to covering of coil, and loss of end knob to strength adjuster Parkes worked at 5 Bramble Street Derby. Read More...
27 Oct

Two Brass Protractors

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A large Brass Protractor by W. Elliott, 268 High Holborn (1835-1849) and a smaller unsigned decorative late eighteenth century protractor-£120 Both in good condition noting v. minor bruising to edge of Elliott instrument-£220 Read More...
27 Oct

A VICTORIAN 8 DRAWER TELESCOPE signed CHADBURN BROS SHEFFIELD.

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This 8 drawer telescope is in good condition. It is approx 75cms long when fully open & 14cms long when closed. The main lens is 4.6cms in diameter. The sliding eye-piece is good. the large lens cap has a missing brass end. All the screws and collars are present. All lenses are damage free. They & the whole telescope could benefit from a good clean.  It is signed ‘Chadburn Bros Sheffield”.  There are slight dints around this engraved name.  Read More...
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