(under subclass 372) Subject matter including means for determining the area of a configuration or the volume of a mass.
(1) Note. This subclass includes also integrating means where this involves no more than optically determining the area under a curve.
SEE OR SEARCH CLASS
33, Geometrical Instruments,
121+, for mechanical means for determining area.
235, Registers,
61+, for similar subject matter which goes beyond merely determining an area of a given configuration as for example where some particular mathematical computation or function is involved.