"Bestall's Polariscope" (c.1850-60), black mirror withy clear and ground glass hinged together; analyzer is abundle of glass plates in a square card box. 4 objects, in original box, with printed instructions "Bestall's Polariscope" (c.1850-60) 1850-1860
Polariscope by Harvey & Peak, successors to W. Ladd & Co., Beak St., London, In incomplete wooden case (case front missing), instrument signed. Polariscope by Harvey & Peak 1884-1889
Early polariscope to show the rings in axis-cut crystals, by William Cary, London, in red leather case, with book of instructions, c.1830. Early polariscope to show the rings in axis-cut crystals, with case and instructions 1825-1835
Elbow projection polariscope, with six large slides, kaleidoscope slide and accessory slide holder with five slides, by Newton & Co., Fleet Street, London, England, 1890-1900 Elbow projection polariscope, with accessories 1890-1900
Polariscope, early form, formerly the property of Sir C. Wheatstone, mid 19th century. Polariscope, early form 1845-1855
Demonstration polariscope, rosewood and ivory frame and handle a with rotating mount containing six mineral crystals samples and oval red leather and wood case with velvet and silk lining, unsigned, British, 1830-1880. Once the property of Sylvanus P Thompson (1851-1916), professor of physics at the City and Guilds Technical College in Finsbury, England. Demonstration polariscope with red leather case. 1830-1880
Complete Jessop-Leech Photoelastic Bench (Polariscope) by Leech (Rochester) Ltd, UK, incorporating alternative mercury-vapour and tungsten light sources, complete with power unit for the mercury-vapour system, as used in the Structural Engineering Laboratory of Imperial College, London Complete Jessop-Leech Photoelastic Bench (Polariscope) by Leech (Rochester) Ltd 1962
Two Immersion Tanks for Photoelastic Examination of Frozen Stress Specimens in a Polariscope, manufacturer unknown, one with viewing window broken, used in the Structural Engineering Laboratory of Imperial College, London Two Immersion Tanks for Photoelastic Examination of Frozen Stress Specimens in a Polariscope 1960
Lantern polariscope. L-shaped brass and iron tube with multiple glass plate polarisor. Spring clamp for slide holding. Rack and pinion for focussing lens. Eyepiece attachment for analysing prism (missing. Lantern polariscope