(under the class definition) Subject matter including holding structure for maintaining the article or material (solid, liquid, or gas) to be inspected, measured or tested in the desired inspection, measuring or testing position; or for maintaining the standard in the desired position.
(1) Note. This subclass includes means to support the holding structure when not otherwise classifiable. Usually the holding structure is shaped or otherwise adapted to permit passage of the testing light rays.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311+, for sample holders which include heating or burner structure for spectroscopic analysis of the sample.
421, for color charts or standards.
SEE OR SEARCH CLASS 33, Geometrical Instruments,
501+, for geometrical gauges.
108, Horizontally Supported Planar Surfaces,
59+, for plural related horizontal support surfaces generally.
204, Chemistry: Electrical and Wave Energy,
600+, for electrophoretic or electro-osmotic apparatus, including the combination of such apparatus with optical measuring or testing means.
211, Supports: Racks,
13.1+, for special article supports usually of the framework type.
248, Supports,
127+, and 200+ for stands and brackets respectively.
250, Radiant Energy,
453.11+, for article or object supports for ray energy generally. 269, Work Holders, for holders for supporting work during a treating operation.
359, Optics: Systems (Including Communication) and Elements,
