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Silver Mounted Lodestone

An attractive silver mounted lodestone from the eighteenth century. The stone is actually in two pieces with a horizontal crack. Mounted in a silver frame with steel supports at either end Read More...

A Set of Napier’s Bones by J. Rabone made for the Melbourne International Exhibition 1880

An excellent and rare set of fifteen bones and associated bone for squares and cubes, made of boxwood, with a tabula fixed to original case. They are unsigned but by J. Rabone and accompanied by a bronze medal awarded to ” J. Rabone and Sons Birmingham Rules Levels and Tapes” Read More...

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

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...

Charming Culpeper Type Microscope C.1800

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...

Sextant in original box from the 19th Century

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...

Rayskin Monocular Telescope Single Draw DOLLOND London C.1780

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...

Set of troy weights with wooden box

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...

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

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...

Dalton’s atomic theory of matter (PMM 261)

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...

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

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...

Cased Wright & Newton Projection Microscope.

Cased Wright & Newton Projection Microscope.    This item is C. 1886 and is of the second form.    The scope also has some accessories including 3 Objectives with matching brass cases.   The Objectives are:  8/10 In, 1 ½ In and 4/10 In.  Also, additional Eyepieces are included.  The scope stands 13” tall and the case dimensions are 15.5” (39.3 cm) long, 8.75” (22.2 cm) wide and just over 6” (15.2 cm) deep.  The red and yellow bands seen on the Read More...

Early Dollond Telescope one draw C.1770

Early Dollond Telescope one draw C.1770 Signed dollond on the lens protector Read More...