UK and Ireland Archives - Page 41 of 94

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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

By Victor Burness

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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...

16 Nov

~FINE BALEEN COVERED, NICKEL SILVER TELESCOPE BY ROSS c. 1830~

By Scientifica Opticae Inc.

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A fine 1 3/4 inch OG refractor by Ross c.1830. Early script signature in the Georgian style ” A. Rofs, London”, this four (4) draw telescope has spectacular optics ( at least 20 X magnification). The body is constructed of nickel silver /electrum with a baleen cover (flawless). The draws are nice and tight, extendable sun shade and OG lens cap. The opposite end has a flip type ocular lens cover. Faults: slight dent to sun shade with the Read More...

13 Nov

Microscope cloth counting glass by J. Casartelli & Son

By Hatchwell Antiques

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Microscope cloth counting glass by J. Casartelli & Son of Manchester. Circa 1910. In original black leather case with satin and velvet lining. Marked: J. CASARTELLI & SON SALFORD.6. Rd 523462. Registered design number: 523462 (1909). Scales divided in to: 0 – ¼ – ½ – 1 inch. and 1 – 10 mm. Base marked: 23. Case dimensions: 6.5 x 5.5 x 3.5 cm. Read More...

11 Nov

Compass sundial Watkins Bristol

By Van Leest Antiques

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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

By Fletcher

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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

Early 19th c. ‘Improved telescope’ by Richardson.

By Scientific Inspirations

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This telescope has a large pancratic eye-piece tube (variable power) and is signed, ‘Richardson, London’, and also engraved with a letter ‘A’ on the eye-piece and additionally engraved on the first draw, ‘Adjustment for Greater Magnification power, for Day or Night’. Also around the back collar, ‘Improved Telescope’. Quite a large two draw telescope (3 draw if you include the pancratic draw) measuring 45.5″ fully extended and 15.5″ closed. It has a ray shade with a removable end cap and sliders at Read More...

03 Nov

Small spyglass telescope, early 19th c.

By Scientific Inspirations

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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

By Victor Burness

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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

3 draw spotting telescope – Dollond.

By Scientific Inspirations

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Circa 1920, signed on the first draw, ‘Dollond, London, x25’. The telescope measures 30″ fully open and 10.25″ when closed with an objective lens of just over 1.5″. The barrel, ray shade, ends caps and shoulder strap are finished in thick, dark tan leather. The draws pull out smoothly and have no dents. The lenses are clear and damage free. The optics are excellent and pin sharp when viewing; (magnification 20 x). Read More...

01 Nov

~EXCELLENT W. JONES TRANSITIONAL SIMPLE MICROSCOPE~

By Scientifica Opticae Inc.

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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~

By Scientifica Opticae Inc.

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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...