US PATENT SUBCLASS 33 / 745
.~.~.~ Zero setting means

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

700  DF  DISTANCE MEASURING {13}
732  DF  .~ Of flexible material {7}
734  DF  .~.~ By rolling contact {11}
745.~.~.~ Zero setting means

DEFINITION

Classification: 33/745

Zero setting means:

(under subclass 734) Subject matter includes means to turn the measuring means back to zero.