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10 Dec

HOOKE’S LAW: THE THEORY OF ELASTICITY AND KINETIC THEORY

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HOOKE, Robert. Lectures De Potentia Restitutiva, or of Spring. Explaining the Power of Springing Bodies. To which are added some Collections, viz. A description of Dr. Pappin’s wind-fountain and force-pump. Mr. Young’s observations concerning natural fountains. Some other considerations concerning that subject. Captain Sturmy’s remarks of a subterraneous cave and cistern. Mr. G.T. observations made on the Pike of Teneriff, 1674. Some reflections and conjectures occasioned thereupon. A relation of the late eruption in the Isle of Palma. London: Read More...
09 Dec

Charming Culpeper Type Microscope C.1800

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The circular base of the microscope has an orifice in its center where a flat mirror mounted on an adjustable bracket is engaged. From this base rise three S-shaped columns which support a shelf that is also circular. From this shelf extend three other small columns, also in the shape of an S, which support the body of the microscope in which the optical tube slides. The tube is adjusted by a rack. In good condition. Identical model, collection Read More...
09 Dec

Sextant in original box from the 19th Century

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Sextant in original wooden box, from the 19th Century.  Optics are complete.   For further information and photos don’t hesitate to contact me. Thank you. Read More...
09 Dec

Rayskin Monocular Telescope Single Draw DOLLOND London C.1780

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Rayskin Monocular telescope single draw DOLLOND London With two positions 1 near 2 Far Green Rayskin  in very good condition and original optical cover. Optical in very good condition and working well Read More...
09 Dec

Set of troy weights with wooden box

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Set of seven troy weights, complete, in a wooden box with blue velvet lining. From the end of the 19th Century.   For further information and photos don’t hesitate to contact me. Thank you. Read More...
09 Dec

Set of avoirdupois stacking weights by De Grave & Co, London

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Set of nine avoirdupois stacking weights by De Grave & Co, London – Borough of Halifax 1894 Complete and with mahogany case in very good condition.     For further information and photos don’t hesitate to contact me. Thank you. Read More...
06 Dec

Dalton’s atomic theory of matter (PMM 261)

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DALTON, John. A new system of chemical philosophy, Vol. I [Parts I & II]. Manchester: S. Russell for R. Bickerstaff; Manchester: Russell & Allen for R. Bickerstaff, 1808-1810. First edition of the first volume of Dalton’s classic work on the atomic theory of matter. Although a second volume was published 17 years later (though only the first part), the discussion of atomic theoy is, in fact, confined to the final chapter of the first volume. “Dalton reconstructed Newton’s speculations Read More...
05 Dec

HENRY HUGHES STELLA VERNIER SEXTANT

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SHIPPING BY FEDEX, UPS, DHL, ETC. FULLY TRACKED.  Contact Email:   [email protected] Read More...
05 Dec

SOLD – Antique Bar-limb Brass Microscope by Andrew Ross London No. 1737 – circa 1860

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Offered for sale – a period condition antique monocular microscope by Ross of London dating to 1860 or thereabouts, with serial number 1737.  It’s in the bar-limb style, with y-shaped foot, twin uprights supporting a pivot and the classic Ross bar-limb arrangement.  Brass-work is generally acceptable with some age and use-related wear/losses here and there to the lacquer finish, but not bad for around 150 years old.  Nice collectable example.   Background to Andrew Ross & Co. Andrew Ross founded his business Read More...
05 Dec

SOLD – Miniature sextant by Mathew Berge.

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SOLD – Rare 2.5 inch radius brass sextant signed on the cross bar, ‘M Berge, London’. The scale reads from 0 -140. The mirrors are very good. Total length 3.25″ and also 3.25″ from end to end of the scale. No damage. Excellent condition. No case. Read More...
04 Dec

A silver and shagreen telescope etui by Ribright, mid-18th century,

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A silver and shagreen telescope etui by Ribright, mid-18th century, Dimension: length 10cm (4”), diameter 2.45cm (1”) ca. 1750 The silver cylindrical tube covered with green shagreen with an eyepiece to the top end with adjustable cover stamped RIBRIGHT OPTICIAN FECIT LONDON, the base with other lens also with cover (operated by a lever), the cylindrical case with lid opening up to reveal the interior case stamped BY EY KINGS ROYAL PATENT and instruments including a pair of scissors in silver and steel, a knife in Read More...
03 Dec

Cathetometer by The precision tool & instrument Co Surrey England ca 1920

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.Cathetometer by The precision tool & instrument Co Surrey England ca 1920 A cathetometer is an instrument for measuring vertical distances in cases where a scale cannot be placed very close to the points whose distance apart is desired.   Read More...
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