Specialist Collectors Sale

Early 19th century telescope tube without optics, on a pillar stand with folding tripod, tube 45cm overall length

19th century brass Ross Microscope no. 3228, with adjustable vertical rack and twin eyepieces, together with two other brass microscopes, Ross 35c...

Early 20th century Barkers Patents prismatic compass, a Starrett micrometer and a stopwatch (3)

Large brass telescope with mounting bracket screw adjustment and lens cap

19th century brass single draw telescope with leather cover, signed - J. Marks & Son Bute Docks Cardiff Day or Night

Philips 6 inch terrestrial globe, circa 1920 (lacking stand)

19th century six-draw brass telescope with wooden hand piece and lens cover, signed - Schulen & Co. Cornhill Ipswich

Brass surveyors' level, mount and spare eye lens, by Troughton & Simms, London, in a fitted mahogany carrying case

Brass sextant with silvered scale and black crackle finish with eyepiece, in a black leatherette fitted case

Selection of microscope lenses, large bull's-eye, rotating prism, live box and other items (qty)

Brass 'Westphal' hydrostatic beam balance with tweezers, weights and thermometer, in a fitted case

Surveying cross marked - Stanley Great Turnstile, Holborn, London, in a fitted case

Barograph marked - R.F. Brevetes Paris, with ink and key in a glass-fronted mahogany case

Large brass pantograph no. 2080, signed - Stanley, London, with accessories, in a fitted case

Late 19th / early 20th century brass microscope with some clear slides, one lens and a lens container, in a fitted mahogany case

Brass 'Society of Arts' pattern microscope with two lenses and an eyepiece, in a fitted mahogany case, together with a box of microscope slides (2)

Large 19th century brass microscope, signed - M. Pillischer, London, no. 3173, with large bullseye lens, other lenses and accessories, in original...

Otis King Patent calculator scale no. 414

19th century brass triple lens microscope by E. Leitz Wetzlar, no. 89990, London Agent C. Baker, 244 High Holborn, London

COC Stereo 15 x 30 x microscope with instructions and original packaging

Japanese Model L - 201 microscope in a wooden case

Desk magnifying glass on a weighted brass stand

Twelve inch Bacon's Excelsior table globe with brass frame and turned wooden stand CONDITION REPORT Split to the knop column, further split to tur...

Brass framed sextant by Heath & Co. New Eltham, London, no. X 202, in original mahogany fitted case, with Certificate of Examination from the Hezz...

Late 19th / early 20th century Negretti & Zambra compensated pocket altometer with gilt metal case, in original fitted leather case

1970s Texas Instruments digital watch, in original case

Eclipse students' microscope with quantity of clear glass slides, in original box, a Shardlow micrometer and other items (qty)

Victorian brass microscope by A. Franks, Manchester, with bullseye and other accessories, in a fitted mahogany case

Brass students' microscope, an Otis Kings model K calculator, two slide rules, set square, rule and thermometer (qty)

1940s German sextant with brass frame, by W. Ludolf Wesermünde no. 22007, in a mahogany case, certified by the German Naval Observatory Main Agenc...

Brass telescope with mahogany extending tripod stand

Brass telescope with integral tripod stand in a fitted wooden case

Edwardian brass surveying telescope no. 7958, stamped - W. Ottway & Co. Orion Works Ealing, Dr Commons Patents 1904, in a fitted case

Rare set of William IV personal scales with weights by W. Poupard, with flush brass handles

Early 19th century lacquered brass compound monocular microscope, the main stand with folding tripod base marked - Tuther 221 Holborn, London, in ...

Late 19th century lacquered brass microscope

Large brass telescope with leather cover and mahogany tripod stand

Victorian lacquered brass microscope by 'C. Collins, Opticians', with accessories, in mahogany box