Made of optically flat plates cemented together. Dimensions 50 x 50 x 50 mm
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With holder & choke 80W & 120W
Optically worked, ground edges
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)
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