US PATENT SUBCLASS 356 / 16
.~.~ Image displaced by moving refracting element

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

3  DF  RANGE OR REMOTE DISTANCE FINDING {9}
9  DF  .~ Base line instrument (i.e., base is a part of instrument) {8}
16.~.~ Image displaced by moving refracting element

DEFINITION

Classification: 356/16

(under subclass 9) Subject matter wherein the range measurement is made by deviating one of the lines of sight by means of an adjustable refracting element.