9cm x 14.5 cm , pack of 25 sheets.
Your Rating Rate… Perfect Good Average Not that bad Very Poor
Your Review
Name *
Email *
There are no reviews yet.
Optically worked, in velvet lined case
Whte finish metal box, mounted on a steel rod with 12V 100W halogen lamp
Ground & polished faces, edges ground. Size 50 mm high & 45 mm wide.
Diffraction Gratings replica mounted on a plate glass.. 2400 (lines/in) 7500 (lines/in) 15000 (lines/in)
There are no reviews yet.