(under the class definition) Subject matter including a scale or scale indicator together with optical elements arranged to project an image of the scale or scale indicator.
(1) Note. The broad recitation of the scale or indicator actuator does not preclude classification here. However, where the scale actuator is claimed in detail classification is with the art to which the actuator relates. Examples of such are in the Search Notes below. Where the scale is projected in conjunction with the object to be measured, projected or not, classification is in Class 356 Optics: Measuring and Testing, subclasses 391+. The combined recitation of the scale and indicator broadly does not preclude classification here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
14, for projection of a speedometer or compass face.
SEE OR SEARCH CLASS
33, Geometrical Instruments,
348, for a compass, a level or a plumb having an optical viewer associated with the indicator thereof. 73, Measuring and Testing,
293, for a liquid-level gage in combination with a projector.
81, Tools; 82, Turning; 83, Cutting and 409 Gear Cutting, Milling, or Planing, for scale projection combined with machine tools.
116, Signals and Indicators,
246+, for a radio-tuning indicator and projection means in combination.
177, Weighing Scales,
178, for a projector in combination with a weighing scale.
340, Communications: Electrical, for an electrical-signal device as there defined combined with means to project an image of the signal.
356, Optics: Measuring and Testing, for scale projection combined with an optical test as there defined.
359, Optics: Systems (Including Communication) and Elements,
436+, for scale reading with the aid of an optical element or system where there is no image projection. 368, Horology: Time Measuring Systems or Devices,
41+, 82+, and 239+ for the combination of a clock and projector.
408, Cutting by Use of Rotating Axially Moving Tool,
16, for scale projection combined with that type machine tool.