.~ With comparison to master, desired shape, or reference voltage
DEFINITION
Classification: 356/394
With comparison to master, desired shape, or reference voltage:
(under subclass 388) Subject matter including optical elements to permit the simultaneous viewing and comparison by the eye or by a photocell of the configuration and (a) a
standard configuration of the same type, or (b) a pattern or gauge having a desired or standard shape, (c) another configuration of the same type, or (d) a reference voltage generated as an electrical analog of a desired configuration.
(1) Note. Light may be projected between an article and a gauge and the test made by detecting the amount of that light with a photocell.
SEE OR SEARCH THIS CLASS, SUBCLASS:
372, for an article compared indirectly with a master as by testing the master first and setting up the results to compare the article to.
