(under the class definition) Subject matter including optical structure for facilitating the reading of a scale, with or without a pointer or indicator, having spaced lines or other
indicia thereon; or for facilitating reading a vernier type indicator where lines from two different scales are matched.
(1) Note. The scale may be on a weighing instrument, slide rule, compass or speed indicator, etc.; and classification is here unless sufficient scale supporting structure is recited to classify with the particular art such as Class 33, Geometrical Instruments; Class 73, Measuring and Testing; Class 177, Weighing Scales; and Class 235, Registers.
SEE OR SEARCH CLASS
116, Signals and Indicators,
327+, for signal pointers and indicating arms.
177, Weighing Scales,
234, for self-positioning scales with magnified indication of spring deformation. 356, Optics: Measuring and Testing,
242.1, for thread counters and similar subject matter where a relationship between the counter and the fabric is recited such as a viewing aperture or support for the counter on the fabric or a fabric support, subclasses 247+ for optical reticles and crosshairs and subclasses 373 and 397 for distance measuring devices which have a scale or optical grid displaced relative to a remote fiducial mark.
