A mid-20th century and later polished German Carl Zeiss RWDF 10x50 aluminium and brass binocular periscope on tripod standprobably circa early 196...

A late 19th century French 2 1/2 inch brass refracting telescope on stand together with a similar period brass and leather single draw telescopeth...

An early 20th century brass theodolite together with a similar period brass surveyor's compass and a cased steel engineering drawing setthe compas...

A late 20th century singing bird automaton together with an associated giltwood pedestalthe automaton in the Victorian stylethe feathered bird per...

A Good Large Model Of A Single Cylinder Inverted Vertical Steam Engine, English, dated 1888,the slide valve chest fixed with a brass plate reading...

A Dollond Solar Microscope, English, late 18th century,signed Dollond London, with brass shutter plate, rectangular mirror with rotary adjustment,...

A Dr. Aitken's Clinical Thermometer, English, late 19th century,in fitted mahogany case, with printed instructions applied to the lid, together wi...

A Smith & Beck Educational Field Microscope, English, Late 19th century,with maker's plaque reading SMITH & BECK LONDON, no. 2716, the folding mic...

A Laboratory Thermometer, English, Late 19th century,with mercury thermometer, silvered liquid chamber, mounted on brass column above quadruped ba...

A Brass Drum Microscope, English, circa 1840,unsigned, with rack-and-pinion focusing, in velvet-lined mahogany case, containing seven objectives, ...

A Robert Mills 2-Inch Brass Refracting Table Telescope, English, circa 1830,signed R. MILLS, SOUTHAMPTON ST., PENTONVILLE, LONDON, the tube with r...

An Elliott Bros Everest Theodolite, English, Early 20th century,platform signed ELLIOTT BROS, LONDON, the theodolite in anodised brass, telescope...

A Pair of Helios 'PNB-2' Military Observation Binoculars, Russian, mid 20th century,with tripod and accessories, 60 degrees vertical elevation, ...

A Richard Spear Universal Equinoctial Dial, Irish, early 19th century,signed Spear Dublin, with silvered compass rose, hinged latitude arc, hour...

A Ross Wenham's brass compound binocular microscope, English, circa 1870,signed ROSS, LONDON, 4006, the tube additionally signed Wenham's binocula...

A Large W. & S. Jones Universal Equinoctial Dial, English, circa 1800,signed to the dial and compass rose W & S Jones, 30 Holborn, LONDON, the sil...

A Torpedo Gyroscope By Whitehead Torpedo Works, English, early 20th century,Serial no. 7145, W&C SR, stamped S.R. to the case, with plaque reading...

A Large Curta Type II Calculator With Instruction Booklet, Liechtenstein, circa 1965,No. 530687, the stepped gear-type pocket calculator with ligh...

An Isaac Carver boxwood slide rule, English, dated 1694,signed ISAAC CARVER fecit 1694, with scales on all four sides of the body and both slides ...

A Griesbaum Singing bird box,German, 20th century, the gilt metal case with enamelled panels of Continental landscapes and classical scene of two ...

A German silver and gem-set singing bird boxunmarked case the movement by Karl Griesbaum, circa 1930 The top with oval hinged cover opening to a s...

A Dutch silver presentation table 'windmill'J de Vries, Leeuwarden / Assen 1929, marked .833 Realistically modelled, with four spinning sails atop...