.~ Measuring, testing, inspecting, indicating or illuminating
DEFINITION
Classification: 162/263
(under subclass 232) Apparatus having means (1) to detect some condition in the operation of the machine, the detecting means operating a visual and/or audible indication of the condition, (2) or to indicate or test a physical or chemical condition of the material under treatment, (3) or means permitting or peculiarly adapted to permit examination of the machine or the material undergoing treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
49, for processes involving a step of testing, sampling or analyzing.
252+, for means detecting a condition and in response thereto causing a control operation.
SEE OR SEARCH CLASS
100, Presses,
99, for presses having measuring, inspecting or testing means and see the search notes thereto for the locus of other art relating to these features. 340, Communications: Electrical,
500+, for electrical automatic condition responsive indicating systems.
