Features
Glass material.
Includes quality control certificate of conformance.
Specifications
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Graduations/markings:
Concentric circle and cross line
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Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
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National Stock Number (nsn):
6650-01-528-4894
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Special Features:
Precision photochrome reproduction on 1.0+/- 0.2mm on ground and polished plate glass, line width 10 microns, fits negative or positive eye pieves, spring-wire locking ring offered to secure in other manufacture's eye piece diameter 19 mm