THICK POLISHED/GROUND GLASS 38.25 MM (1-1/2") SQUARE MIRROR BLANK
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THICK POLISHED/GROUND GLASS 38.25 MM (1-1/2") SQUARE MIRROR BLANK
Probably intended as a mirror blank, the thick glass 1-1/2" squares are polished on one side and lightly ground on the other. The polished side is flat within 1/20 wavelength. Unused. Manufacturer's # 690183
