(under subclass 666) Subject matter wherein the contact member positions a pivot point and the point marker or the point marker guide is angularly positioned about the pivot point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1, for angular measurement devices.
277+, for a straight line ray type geometrical instrument, particularly subclass 281 for a vertical and horizontal angle measurement, subclasses 282+ for a vertical angle measurement, and subclass 285 for a horizontal angle measurement.
300+, for an indicator of direction of force traversing natural media, particularly subclass 341 for a measurement in plural direction or shape with a variable angle determination and subclass 343 for an angle determination.
418+, for a pivoted straight edge and a square, particularly subclass 434 with a protractor and subclass 421 having angle indicating means and straight edge as hypotenuse.
534+, for an angle gauge. 569+, for a rotary work support adjustment.
