Collection of spectacles (289), spectacle lenses (93) mounted on pyramid fitting, with labels attached as detailed on list "the evolution of the Bi-focal lens" (neg nos S.M. 2007) may be sold to the public, see R.P. 24/599, dr. Van Rohr. See individual stroke records for more details.
Pyramid shaped exhibition panel mounted with a selection of 93 clear and coloured lenses. The display board is part of the Duncombe Collection of spectacles, which deals with the various types of eye defect that can be rectified with eyeglasses. These include correction for hypermetropia, presbyopia, myopia, astigmatism and strabismus.
Spectacle case of wood covered in green shark skin
1810-1829
Oval white double concave spectacle lens
Silver-framed 'visuals' spectacles
1775-1800
Oval white meniscus convex spectacle lens
Oval white meniscus concave spectacle lens
Round blue double convex spectacle lens
Oval blue double concave spectacle lens
Oval blue meniscus convex spectacle lens
Oval blue meniscus concave spectacle lens
Oval pink meniscus convex spectacle lens
Oval smoke double convex spectacle lens
Oval smoke double concave spectacle lens
Oval smoke meniscus convex spectacle lens
Oval smoke meniscus concave spectacle lens
Oval smoke deep double concave spectacle lens
Oval amber double concave spectacle lens
Oval white deep double concave spectacle lens
Round white deep meniscus concave spectacle lens
Round blue deep double concave spectacle lens with ground edges
Oval white 'new system' deep plano-concave lens.
Round blue double convex cataract lens.
Round white double convex cataract lens.
Round smoke double convex cataract lens.
Round white meniscus convex cataract lens.
'New-system' cemented plano-convex cataract lens
Round white 'lenticular' concave spectacle lens
Oval white convex spectacle lens with bevelled edge for frame
Oval white concave spectacle lens with bevelled edge
Oval white convex spectacle lens with a grooved edge
Oval white concave spectacle lens with a grooved edge
Oval white double convex pebble spectacle lens with a grooved edge
Oval white double concave pebble spectacle lens
Oval white meniscus convex pebble spectacle lens
Oval white meniscus concave pebble spectacle lens
White plano-convex spectacle lens
1905-1915
White plano-concave spectacle lens
1905-1915
White convex spectacle lens
White concave spectacle lens
Plano-concave cylinder 'chlorophylle' tint
Blue spherical- cylinder concave spectacle lens
Blue plano-cylinder concave spectacle lens
Blue plano-cylinder convex spectacle lens
Smoke plano-cylinder concave spectacle lens
Smoke plano-cylinder convex spectacle lens
Smoke spherical-cylinder convex spectacle lens
Smoke spherical-cylinder concave spectacle lens
Square white prism for correcting diplopia.
Oval white convex bi-focal spectacle lens, 1845.
1845
Oval white concave bi-focal spectacle lens with a ground edge
1876
Bi-focal spectacle lens
1900
Bi-focal spectacle lens
1899
Oval white 'Kryptok' fused bi-focal spectacle lens with ground edges
1904
'Strubin' cemented bi-focal spectacle lens
1891
White oval Bright's patent bi-focal spectacle lens with triangular segment
1912
Selected unworked slab of calculated lower density
Slab ground flat and shaped
Selected segment of calculated high density
Segment polished on curved face to required reading curve
Slab and segment fused by heat
Fused blank ground and polished
Round white 'Kryptok' tonc bi-focal spectacle lens
Round white 'Kryptok' tonc bi-focal spectacle lens
'Kryptok' tonic bi-focal complete spectacle lens
Square 'Kryptok' fused slab and segment
Square 'Kryptok' fused slab and segment
Square 'Kryptok' fused slab and segment
Square 'Kryptok' fused slab and segment
Square 'Kryptok' fused slab and segment
Square 'Kryptok' fused slab and segment
Round 'Kryptok' fused slab and segment
Oval neutral or smoke parallel glass for preservers spectacles
Oval blue parallel glass for protectors spectacles
Oval spectrum blue parallel glass
Oval 'Chlorophylle' parallel glass
Oval white bent glass for protectors spectacles.
Oval smoke or neutral tint
Oval smoke or neutral tint
Oval smoke or neutral tint bent glass spectacle lens
Oval smoke or neutral tint bent glass spectacle lens
Oval smoke or neutral tint bent glass spectacle lens
Oval smoke or neutral tint bent glass spectacle lens
Oval smoke or neutral tint bent glass spectacle lens
Oval blue bent glass spectacle lens
Oval blue bent glass spectacle lens, pale tint.
Oval blue bent glass spectacle lens, medium tint.
Oval blue bent glass spectacle lens, medium tint.
Oval blue bent glass spectacle lens, bright tint.
Oval blue bent glass spectacle lens, dark tint.
Oval blue bent glass spectacle lens
Oval 'Chlorophylle' bent glass spectacle lens
Oval 'Chlorophylle' bent glass spectacle lens
Smoke or neutral tint glass for preserver spectacles
D-shaped blue tint glass for preservers spectacles
D-shaped green tint glass for preservers spectacles
English-made 'ladies' clip spectacles with oval lenses and shell plaquet
1890-1909
Clip spectacles with a steel rim and oval lenses
Ladies rimless clip spectacles with a steel rim and oval lenses
Ladies rimless clip spectacles with tortoiseshell plaquets
Ladies rimless clip spectacles with cork plaquets
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Details
- Category:
- Optics
- Object Number:
- 1921-323
- type:
- spectacles
- credit:
- Dunscombe collection of spectacles
