(under the class definition) Implement which includes means perceptible by one of the senses for determining (a) the amount, condition or other characteristics of the supply material, or (b) the condition of a means for controlling the flow of material to the tool*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
142, for an implement including a reservoir* and a liquid floating follower of a color distinct from that of the coating material so as to indicate the quantity of material
in the reservoir, as by being the visible through a transparent reservoir or by emerging onto the work surface.
233, and 256+, for an implement having a bifurcate, broad-face, adjustable gap tool, and indicating means for the degree of gap adjustment.
