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fluorescent light tube
Philips
Late 20th c.
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fluorescent light tube
Sylvania Electric Products Inc.
Late 20th c.
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Holophane-Edgcumbe Auto-Photometer
Everett, Edgcumbe and Co
Mid 20th c.
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Light switch surround
Artomic
1997
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Model 455 Moving Coil Light Meter
Megatron Ltd
Mid 20th c.
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Model S511 Photometer
Weston Instruments
September 1978
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Spectacle-mounted reading light
Norville Group
2010s
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Spectacle-mounted reading light
Norville Group
2010s
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