(under subclass 1) Subject matter wherein the functions of the twisting operation are continuously or periodically checked or surveyed and variations of the twisting functions from pre-established or acceptable ranges or norms are noted or indicated.
SEE OR SEARCH CLASS
73, Measuring and Testing,
159+, for measuring properties of yarns or filaments.
324, Electricity: Measuring and Testing,
658+, and 691+ to determine nonelectrical property of a material by means of its capacitance, resistance, or conductivity.
