 | Trial lens set in brown leatherette case with hinged lid and a diversity of accessoriesEquipment / Trial lens case c 1900 - 1910 Time Period: 1900 to 1939 | (Cat no. 2799
)
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 | Trial lens set (spheres only) in wooden case with hinged lidEquipment / Trial lens case c 1890 Time Period: 19th C | (Cat no. 2800
)
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 | Compact trial lens set for travelling opticianEquipment / Trial lens case c 1900 Time Period: 1900 to 1939 | (Cat no. 2801
)
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 | Trial lens set (spheres only and with D and inch scales) in black leatherette caseEquipment / Trial lens case c 1880 Time Period: 19th C | (Cat no. 2802
)
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 | Loring ophthalmoscope & caseEquipment / Ophthalmoscope Designer/inventor: Edward G Loring c1905 Time Period: 1900 to 1939 | (Cat no. 2803
)
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 | Paxton ophthalmoscope & case by Curry and PaxtonEquipment / Ophthalmoscope c1905 Curry & Paxton Time Period: 1900 to 1939 | (Cat no. 2805
)
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 | Small travelling trial lens set with oval lensesEquipment / Trial lens case c 1880 Time Period: 19th C | (Cat no. 2806
)
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 | Trial lens set (spheres only) in wooden caseEquipment / Trial lens case C 1900 Time Period: 1900 to 1939 | (Cat no. 2807
)
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 | Large comprehensive trial lens set in black leatherette case with trial frame and test cardEquipment / Trial lens case c 1935 Societe des Lunetiers (G A Patouralle, Paris) Time Period: 1900 to 1939 | (Cat no. 2808
)
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 | Trial lens set in timber caseEquipment / Trial lens case c 1910 Time Period: 1900 to 1939 | (Cat no. 2811
)
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 | Spencer Optical (American Optical) Lensometer (vertometer)Equipment / Vertometer, lensometer, focimeter Corporation: Spencer Optical Company c 1940 Spencer Optical Company Time Period: 1940 to 1999 | (Cat no. 2812
)
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 | Trial lens set (spherical lenses only) in lacquered wooden caseEquipment / Trial lens case c 1890 Time Period: 1900 to 1939 | (Cat no. 2818
)
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 | Trial lens set in large wooden glass fronted caseEquipment / Trial lens case c 1910 Time Period: 1900 to 1939 | (Cat no. 2819
)
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 | Luckiesh-Moss visibility meterEquipment / Lighting meter Designer/inventor: LUCKIESH Matthew, MOSS Frank K 1935 General Electric Company Time Period: 1900 to 1939 | (Cat no. 2820
)
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 | Pigeon-Cantonnet stereoscopeEquipment / Synoptophore, stereoscope Designer/inventor: PIGEON Leon, CANTONNET Andre Louis Henri c 1950 E. O. Co Time Period: 1940 to 1999 | (Cat no. 2827
)
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