EMAIL : gravitylab@hotmail.com / info@gravitylab.in
Mobile : 9892256737 / 8286930835 / 8108474704 / 9821198397
Landline : 022-23010130
DIFFRACTION GRATING (Hilger & Watt Type)
15000 Lines per inch, (600Lines/mm) 25000 Lines per inch, (1000Lines/mm) 2500 Lines per inch, (100Lines/mm)
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