US PATENT SUBCLASS 33 / 475
.~.~ With right angle truing adjustment


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

403  DF  STRAIGHTEDGE TYPE {16}
474  DF  .~ Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares) {7}
475.~.~ With right angle truing adjustment


DEFINITION

Classification: 33/475

With right angle truing adjustment:

(under subclass 474) Subject matter provided with means to accurately position the straightedges at a 90 deg. angle relative to each other.