Features
Glass optical material.
Crossline.
Includes quality control certificate of conformance.
Specifications
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Width:
0.375 inches
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Diameter:
3.1200 inches
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Axial Thickness:
0.375 inches
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Graduations/markings:
Cross line and vertical hairline
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Style Designator:
Crossline
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Supplementary Features:
Material optical glass per mil-g-174, grade b, type 517-642
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Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
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National Stock Number (nsn):
6650-01-137-1685