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Pantograph by Thomas Dunn of Edinburgh. Circa 1845.

An oak cased brass pantograph by Thomas Dunn of 50 North Hanover Street, Edinburgh. Circa 1845. Numbered: 402 Interior of the case has trade label: THOMAS DUNN, OPTICIAN, MATHEMATICAL AND PHILOSOPHICAL INSTRUMENT MAKER, 50 NORTH HANOVER STREET.EDINBURGH. The interior also has a handwritten note inside the lid with the “Rule for setting Dunn’s improved pantograph“, dated “27 February 1845“. see the photograph of note for the equations needed to be used for the settings. Dimensions of case: Height: 14.5 cm | 5.75 inWidth: 90 Read More...

~VERY GOOD VICTORIAN MICROSCOPE LAMP-BAKER~

Standing 11 inches tall on a 5 inch diameter brass ring, this Victorian microscope lamp shows some upper lamp innovations beyond the Swift-type lamp but very little use. Signed “Baker, 244 High Holborn, London”, it retains the typical round glass reservoir and stopper (often broken and later replaced by metal ones), paraffin oil lamp burner and wick (original) assembly, japanned/anodized metal tapering chimney (often cracked in the Swift models) with original blue glass filter and with a fully adjustable (both Read More...

EARLY DOLLOND HYDROMETER

SHIPPING ARRANGED FULLY TRACKED.    CONTACT EMAIL:  [email protected] IVORY REGISTRATION NUMBER. 2C723258 Read More...

Early 19th century simple pocket botanical microscope

This is a fully intact, unsigned, botanical, simple pocket microscope made of brass, and encased in mahogany. It is estimated to have been produced between ca. 1810 and 1830. The device consists of a brass column with a round shape, a removable circular stage with a 1 1/2-inch diameter, and a section where a B/W disc and/or live box (not included) can be inserted. There are two clear interchangeable lenses that can be used independently or coupled and can be Read More...

A HANDSOME DOLLOND TELESCOPE, 2/2 18th

A good “Dollond London” four-draw tubes refracting telescope in green ray skin (shagreen) and green vellum tubes with brass fittings. Dimension: 28cm (11”) close; 102 (40”) fully extended Conditon: very good, few scratches to inner tubes. Complete with dust-cap (objective cap missing). It gives fine erect images with its singlet objective lens.   John (1706 – 1761) and Peter (1730- 1820) Dollond were British makers of optical and astronomical instruments who developed an achromatic (non-colour-distorting) refracting telescope.    Read More...

Miniature Architect Set with balusters compass in red leather case C. 1800

,Miniature Architect Set with balusters compass in red leather case C. 1800 one with a pencil holder at the pointed end, a dry point drawing pen, and a small ruling pen. Very good condition Read More...

~LOUPE/THREAD COUNTER-LARGE FORMAT-BRASS c.1890

This fine brass loupe /thread counter/magnifier could be used for a variety of purposes and has a variable distance option on the barrel for very fine and close work. Optically clean and clear with tightening ring  for the graduated barrel length (0-3 cm. working distance internally with an external scale 0-6 in half centimeter gradations). Ocular lens is 1.5 cm, object lens is 3 cm. with a maximum extendable length of 8 cm. Ideal for many hobbyists or naturalists Read More...

~A GOOD PLANE TABLE SURVEYING COMPASS by BADDELEY-1785~

A good plane table surveying compass by John Baddeley of unusual features and undocumented signature c.1785. Measuring 6 3/8 inches (16 cm.) square and constructed of mahogany wood with brass accents/mounts with fully engine divided 360 degree raised inner ring in one degree increments, this magnetic compass has seen signs of use but not abuse. The silvering of the dial has faded/oxidised/rubbed? on the outer edges of the face (divided into four cardinal points only). The central rose? pivot point Read More...

~RARE AND FINE 18th c. CASED HYDROMETER~

A rare survivor of the Georgian era. A pocket hydrometer used to measure the strength of alcohol on a scale of 1-10. Weighted bulbous end (lead ball/shot?) ensured that the higher the alcohol content, the lower the bulb would sink in the solution (10 being pure alcohol or high proof based on density). The stem is graduated on both sides. Made of three parts and silver soldered together, it shows little wear. The turned walnut, two part  case is Read More...

Anesthesia: Trilene Inhaler in Original Box

Trilene* inhaler for obstetric anesthesia made by Cyprane Ltd in Oxenhope,UK. “Hand-held by patient, this inhaler was used for obstetric analgesia. Comes in original, labeled, blue cardboard box that includes cylinder, face mask and no.5. key to charge. UK Pat. no 628709. Maker: Cyprane Ltd, Keighley England.” The inhaler, including mask, is in very good condition ( what you’re seeing in first image is the reflection of the camera and me holding it) ; the box shows wear. A Read More...

FINE 18TH CENTURY EBONY QUADRANT DATED 1781 BY COLE LONDON

SHIPPING BY FEDEX, UPS, ETC. FULLY TRACKED.  Contact Email:   [email protected] IVORY EXEMPTION NUMBER. AUVV32P9 Read More...

BRISSE BLOND TORTOISE SHELL FAN WITH SINGLE DRAW SPYGLASS, IN GOOD WORKING COND. C1840

NO SPLITS, NOTHING BROKEN, NO REPAIRS. AN EXCEPTIONALLY FINE EXAMPLE , WITH PAINTED FLORETS,  6 IN.LONG CLOSED   Read More...