of the diaphragm or bellows type

Full Title

Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it > with measuring chambers which expand or contract during measurement > of the diaphragm or bellows type

Classification Context

Section:

PHYSICS

Class:

MEASURING; TESTING

Subclass:

MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME