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25 Jul

John Blagrave’s ‘universal’ instrument

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  BLAGRAVE, John. Baculum Familliare, Catholicon sive Generale. Baculum familliare, catholicon siue generale : A booke of the making and vse of a staffe, newly inuented by the author, called the familiar staffe. As well for that it may be made vsually and familiarlie to walke with, as for that it performeth the geometrical mensurations of all altituded, longitudes, latitudes, distances and profundities: as many myles of, as the eye may well see and discerne: most speedily, exactly and familiarly Read More...
25 Jul

John Collins’s treatise on the use of the quadrant

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  COLLINS, John. The sector on a quadrant: or A treatise containing the description and use of four several quadrants … [including “The description and uses of a great universal quadrant” & “The description and uses of a general quadrant”]; also an Appendix touching reflected dyalling from a glass placed at any reclination [by John Lyon]. London: J. M. for George Hurlock et al., 1659.   First edition, second issue, with cancel title dated 1659. A quadrant is an astronomical calculating device showing a projection of the heavens. By the end of the seventeenth century it was one of the most common astronomical instruments. This volume is actually a combination of four separate works, the last two separately paginated. The first three are by Collins and describe various configurations of quadrants. The final work, an appendix by John Lyon, describes how sundials Read More...
25 Jul

Dolland solar compendium microscope

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An early 19th century compendium microscope by Dolland in original mahogany fitted case, with good lacquer throughout sold as seen in the images.   Read More...
25 Jul

~VERY GOOD ROSS #1 POLARISING MONOCULAR MICROSCOPE~SOLD

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A very good Ross monocular polarising microscope with 90% of it’s compliments and lacquer. Possibly the earliest extant example of this type of microscope in museum or private collections. Numbered on the rear of the claw foot A.ROSS, London, No. 524, this pre-RMS monocular has accessories seldomly seen in such a compact format. I have seen later examples of this microscope in cases 20 inches tall but this one fits into a double door mahogany case measuring just 13 x Read More...
24 Jul

A RARE 18TH CENTURY WAYWISER BY JONATHAN SISSONS

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A super example of an early waywiser by Jonathan Sissons with a finely engraved center of the dial and a silvered readings dial, with the original hands. The oak and mahogany case has a beautifully constructed wheel and elegant handle. In original untouched condition. Sissons worked on his own from 1722 to 1747, he was apprentice to George Graham the famous clock maker, which explains the beautiful hands and fine engraving. I think this is the only example of Sissons work we have Read More...
23 Jul

C1860s Coxeter’s Opiate Syringe

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A good cased example of Coxeter”s hypodermic syringe for “narcotic solutions.” It was introduced by the firm’s founder in 1860: see last image, which is taken from Coxeter’s trade catalog for 1870. Case has minor loss of leather covering; syringe is in very good condition Length of case: 14.5 cm or 6″ approx. For display only.                                                Read More...
21 Jul

~FINE R&J BECK CIRCUIT STAGE BINOCULAR MICROSCOPE~

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A fine No.1 binocular microscope by R&J Beck, 31 Cornhill, LONDON serial number 6632.  The microscope stands on a flat tripod base/foot, two supporting pillars, both terminating in trunnions supporting the microscope body, with large plano-concave swing-arm mirror (minor spotting) and sliding collar, substage condenser holder and screw X-Y/up-down adjustment. The stage has rack and pinion focusing to a large goniometer circuit stage allowing for full rotation of the specimen (demarcated from 0-180 degrees). Stage with X-Y controls, swept limb Read More...
17 Jul

William Warris 1804 Patent Spyglass

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An example of the patent spyglass (No.2779 4 August 1804) by William Warris, in gilt metal, and in good condition, noting part of the case is missing Read More...
17 Jul

Wooden Polyscope

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Good working order  Read More...
17 Jul

Brass Polyscope

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small dents to the body  Read More...
16 Jul

Marconi-Newton constant speed windmill, dated 1916.

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A twin bladed aluminium Marconi-Newton type 182S constant speed windmill dated 1926.  MARCONI-NEWTON CONSTANT SPEED WINDMILL PAT. No 262558/1926 3500 R.P.M. 85/300 M.P.H TYPE 182S No 27582/23 Propeller length: 46 cm.  For a similar Marconi-Newton constant speed windmill see the online catalogue of the Marconi Collection at the Museum of History of Science, Oxford. Inventory Number: 54960  Mounted on a modern display stand allowing the propeller to rotate.  Read More...
15 Jul

Mechanical Hatching Rule

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Ebony and nickel mechanical hatching rule in good working condition Read More...
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