Plate cut from anhydrite biaxial crystal
Plate cut from barytes biaxial crystal
Small polariscope, by C.D. Ahrens
Polariscope (c.1840-50)
1840-1850
Polariscope (c.1850)
1850
Norrenberg Polariscope especially adapted for crystallographic work
Plate cut from 0.5mm calcite uniaxial crystal
Plate cut from 3mm calcite uniaxial crystal
Plate cut from dioptase uniaxial crystal
Plate cut from brucite uniaxial crystal
Plate cut from zircon uniaxial crystal
Plate cut from 1mm calcite uniaxial crystal
Rutley's polariscope, no polarizing nicol prism
Airy polariscope modified by Brady
Polariscope by Reichert no.2472
Wollaston's polariscope No. 948
1850-1899 (estimated)
Brass demonstration polariscope with biaxial crystal
1830-1880
Polariscope, wood and glass
1850-1924
Plate cut from meionite uniaxial crystal
Plate cut from hemitrope calcite uniaxial crystal
Plate cut from adularia biaxial crystal
Plate cut from aragonite biaxial crystal
Plate cut from axinite biaxial crystal
Glass plate used as polariser, in case
1850-1924
Polariscope (c.1840-50)
1840-1850
Polariscope
1840-1850
Norrenberg Polariscope by Soleil
Plate cut from 8mm quartz uniaxial crystal
Plate cut from apophyllite uniaxial crystal
Plate cut from beryl uniaxial crystal
Plate cut from apatite uniaxial crystal
Plate cut from right-handed quartz uniaxial crystal
Plate cut from corundum uniaxial crystal
Plate cut from left-handed quartz uniaxial crystal
Polariscope
1850-1924
Large projection polariscope in three mahogany cabinets
1875-1880
Norrenberg polariscope with Wheatstone's improvements
1876
Toy polariscope
1828-1830
Hand polariscope
1845-1855
"Bestall's Polariscope" (c.1850-60)
1850-1860
Polariscope, early form
1845-1855
Complete Jessop-Leech Photoelastic Bench (Polariscope) by Leech (Rochester) Ltd
1962
Two Immersion Tanks for Photoelastic Examination of Frozen Stress Specimens in a Polariscope
1960
Polariscope by Horne and Thornthwaite, in case
Polariscope by Harvey & Peak
1884-1889
Arago polariscope
Early polariscope to show the rings in axis-cut crystals, with case and instructions
1825-1835
Part of polariscope
1831-1870
Elbow projection polariscope, with accessories
1890-1900