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IRISH SEXTANT BELFAST

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

A large and early Weiss Liston-amputation knife

A large and early  (15″ or 37.50 cm) Weiss Liston-amputation knife with back sharpened last two inches. It is signed  both on checkered ebony handle and blade with name and 62 The Strand address. One side of handle has stable hairline. Blade is bright with no evidence of rust or corrosion. Read More...

STANLEY SEMI-ELLIPTICAL TRAMMEL

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

FINE EARLY 19TH CENTURY OCTANT BY BYWATER OF LIVERPOOL

SHIPPING BY FEDEX, UPS, DHL, ETC. FULLY TRACKED.  Contact Email:   [email protected] THE SCALE HAS BEEN DIVIDED ON: SPENCER, BROWNING & RUST’S DIVIDING ENGINE. SBR IVORY EXEMPTION NUMBER CVXF8CB6 Read More...

~FINE GEORGIAN CIRCUMFERENTOR-TROUGHTON~

20 cm. diameter with 12 cm. silvered compass and 10 cm. sighting vanes, this surveying instrument is signed “Troughton, London” in flowing script. Compass dial divided into 360 degrees on the outer ring and further divided into four 90 degree quadrants. Unusual features include a RED compass needle (still points North), round knurled compass lock knob and a wonderful butterfly nut below for the pole staff. Outer ring fully divided in 1/2 degree increments for the full 360 degrees Read More...

Stevenson on Illuminating Lighthouses, First Edition, 1835.

First edition of Alan Stevenson’s 1835 book, Report to the Committee of the Commissioners of Northern Lights, Appointed to take into consideration the subject of Illuminating the Lighthouses by Means of Lenses. Edinburgh: printed by Neill and Company, MDCCCXXXV. The book contains six plates drawn by Allan Stevenson when he was in Paris at the office of M. Fresnel, drawn by Steveson, he copied them from Fresnel’s original in 1834, as denoted to the foot of five of the plates. In Read More...

SOLD – Three draw Irish telescope – Mason, Dublin.

SOLD – A three draw brass telescope with a walnut barrel, signed near the eye-piece, ‘Mason, Dublin’. Several of the Mason family worked from 1780 – 1878. The telescope measures 23 inches fully extended and 8 inches when closed with a main lens of 35 mm. It gives a good, clear sharp image when viewing with a magnification of 28x. In excellent condition throughout and has the original leather case. Read More...

~PRISTINE MINING ANEMOMETER IN ORIGINAL BOX~

Signed “Negretti and Zambra, No.997”, this air flow miner’s meter (anemometer) has seen zero use. Signed and serialised with trade and inspection label to the lid of the mahogany box, it retains ALL of it’s original orange lacquer, 5 subsiduary dials (from hundreds to hundreds of thousands of feet per minute), works flawlessly, needle lock, aluminum vanes (expensive at the time), with post mount which screws into the base. Dial measures 2 1/2 inches, vane surround is 3 1/2 Read More...

Engraved presentation telescope, Australian connection.

A taper barrelled single draw leather covered marine telescope, the barrel with a ‘merchant services flag panel. The single draw is signed, ‘Dollond, London’ with additional inscription, ‘Presented to Captain Robert Pollock by the Passengers of the Ship, Plantagenet, 1854’. The Plantagenet was a wooden sailing ship of 806 tons, built in Newcastle in 1838. It arrived in Australia in July 1854 with the Captain and crew of 23 and with a passenger list of 310 including a surgeon. Captain Pollock Read More...

1950’s Whirling spychrometer Casella London    

A 1950’s Caella London Whirling psychrometer, also known as a sling psychrometer, for measuring humidity, designed by J. J. Griffin & Son Ltd. and made to B.S.2842 by Casella, London, UK, 1950-1953. Contains wet and dry bulb thermometers. Whirling or sling psychrometers are types of hygrometers for measuring air humidity. They contain two thermometers, one of which has a bulb kept wet with a cloth soaked in distilled water. The device is whirled rapidly in the air, and the difference Read More...

~GOOD UNSIGNED GREGORIAN TELESCOPE c.1800~

A well used but not abused 2 1/2 inch diameter, brass Gregorian reflecting telescope c.1800. Early roping of the brass, circular knurled nuts to the body tube, pivoting and rotating stem terminating in folding cabriolet legs with post screw for the field. Overall length (including eyepiece) is 18 inches and it stands 14 inches tall. Barrel has one small dent 1/2 inch from the end. Excellent primary and secondary speculum metal mirrors. Good optics with focussing by short worm Read More...

Antique Ross-Zentmayer No. 1 Binocular Microscope in Brass by Ross London c1885

Brief Summary:This really is the real deal – an Andrew Ross-Zentmayer No.1, serial number 5380, the foot engraved “Ross London 5380” with Jackson Lister-type limb design, Wenham binocular, helical cut coarse focus, vernier screw/lever fine focus, rotating mechanical stage with x/y controls and integral iris, swinging sub-stage with dovetail recess for technical sub-stage fittings and large plano-concave reflector and lovely bright lacquer finish with just the right time-worn patina.  Offered for sale, this listing presents a rare opportunity for Read More...