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'Protal' and 'Protex' Gas Welding Glasses
OPHTHALMIC LENSES
tinted lens
Chance Brothers Limited
Europe: United Kingdom
Mid 20th c.
glass; cardboard
overall: 195 x 107 mm

Lens sample set, mounted within stiff black card. Contains 8 green tinted lens samples for industrial use (four without flux).


2004.450

Arthur Bennett Archive



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