Features
type 517-645 grade c mil-g-174 optical glass material.
Includes quality control certificate of conformance.
Specifications
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Material:
Glass, optical, mil-g-174, grade c, type 517-645
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Federal Supply Class (fsc):
Night vision equipment, emitted and reflected radiation
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National Stock Number (nsn):
5855-00-138-2347
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Special Features:
2.126 in. Dia; 13.1378 in. Equivalent focal lg; 13.2087 in. Back focal lg; 0.1142 in. Axial thickness