US PATENT SUBCLASS 33 / 558.05
.~.~.~ By screw means

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

501  DF  GAUGE {61}
558.01  DF  .~ Pivoted probes (e.g., divider, caliper, etc.) {7}
558.04  DF  .~.~ Having adjustable legs {1}
558.05.~.~.~ By screw means {5}
558.06  DF  .~.~.~.~> Tangent
558.07  DF  .~.~.~.~> Median
558.08  DF  .~.~.~.~> Quick adjustment
558.09  DF  .~.~.~.~> Having opposed threads
558.1  DF  .~.~.~.~> Rotatable nut

DEFINITION

Classification: 33/558.05

By screw means:

(under subclass 558.04) Subject matter wherein the legs are moved by a rotatable threaded member.