US PATENT SUBCLASS 33 / 821
.~.~.~ With preliminary setting arrangement

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

700  DF  DISTANCE MEASURING {13}
783  DF  .~ Opposed contacts {10}
813  DF  .~.~ Micrometer {10}
821.~.~.~ With preliminary setting arrangement {4}
822  DF  .~.~.~.~> By disengaging threaded element
823  DF  .~.~.~.~> Micrometer slidably mounted on a beam {1}
825  DF  .~.~.~.~> Spindle or micrometer slidable
826  DF  .~.~.~.~> By use of interchangeable parts of different sizes

DEFINITION

Classification: 33/821

With preliminary setting arrangement:

(under subclass 813) Subject matter wherein one of the contacts may be moved to the approximate distance before one of the contacts is moved by the operation of the threaded element.