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PCE
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DIFF Subgroup
G01L 23/20

combined with planimeters or integrators

Introduced: September 1968

Full Title

Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid > combined with planimeters or integrators

No child classifications to compare. This is a leaf node in both IPC and CPC.