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Astikorrekt & case
Optikgerate
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Axiometer
William Gowlland Ltd
Early 20th c.
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Cone (Prism) Test Lens
Mid 20th c.
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five trial lenses / stenopaeic slits
20th c.
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Halberg Trial Clip and a Mallett Near Distance cell
Keeler; Theodore Hamblin Ltd
1980s
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Half-Frosted Disc
Ellis Optical Company
Mid 20th c.
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Priestley Smith Keratometer Trial Lens
Ellis Optical Company
Mid 20th c.
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Stenopaeic slit disc with handle
Mid 20th c.
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Stigmat Telescopic Testing Unit
Stigmat Ltd
Mid 20th c.
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Trial Contact Lens set
Belgravia Optical Company Ltd
20th c.
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two trial lens hand frames & case
20th c.
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