Protects the lens from scraping powder etc. during processing of the ball mill.
The transparency is good, the power can be read with the lens meter, and even if you strike a stamp from the top of the tape it will not repel the ink.
Color: Blue
No.725N-A:
Size: Width 38 mm × length 100 m
No.725N-B:
Size: Width 25 mm × length 50 m