Filters of plastics or similar material for theatre stage lighting and illuminated exit and similar signs. Tests for colour fastness to light and heat, and non-flammability. Colorimetric curves for ten colours.
Original price was: $190.50.$95.00Current price is: $95.00.
Specification for colour filters for theatre lighting and other purposes
BSI Group , 11/19/1965
Pages: 23
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