US PATENT SUBCLASS 356 / 393
.~.~.~ Having master or desired configuration projection

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

388  DF  BY CONFIGURATION COMPARISON {8}
391  DF  .~ With projection on viewing screen {1}
392  DF  .~.~ For comparison with master or desired configuration {1}
393.~.~.~ Having master or desired configuration projection

DEFINITION

Classification: 356/393

Having master or desired configuration projection:

(under subclass 392) Subject matter including means to project a master or desired shape on the viewing screen in addition to an image of the test configuration.

(1) Note. In the case of a contact comparison between an article and the gauge or master a beam of light may be projected between the gauge or master and the test configuration, and an image of the light between the gauge and test configuration then projected on a screen is in this subclass 393.