Listing ID #1558509
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Contact SupplierWe are offering diffractions grating
(hilger & watt type) 38 x50 mm.
Replica on glass plate & covered with another glass plate.
I)15000 l.p.i. 13400 linesinch
ii) -do- superior quality
iii) 100 lines for laser
iv) 3- in one for laser