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PHOTOGRAPHIC
REPLICA GRATINGS MOUNTED ON PLATE GLASS AND SUITABLE
FOR VISUAL.
GRADING
SIZE : 25 X 25 MM , 50 X 38 MM ON GLASS PLATE.
THE
GRATING ARE OF : 300 LINES PER MILLIMETER.
..................................600
LINES PER MILLIMETER.
................................2400
LINES PER INCH.
................................7500
LINES PER INCH.
..............................15000
LINES PER INCH.
Prod
ID : DG-4904
+ SIZES
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