US PATENT SUBCLASS 356 / 251
.~ Reticle lies outside viewing path

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

247  DF  FIDUCIAL INSTRUMENTS {3}
251.~ Reticle lies outside viewing path {1}
252  DF  .~.~> Reticle image transversely adjustable relative to optical axis

DEFINITION

Classification: 356/251

(under subclass 247) Subject matter where the lines of sight from the target and from a reticle converge and are optically combined.