what is the diffrence between mmwc and kg/cm2 for pressure
measurment when we are using mmwc and when kg/cm2 and why?????
?? what is the reason

Answer Posted / chirag darji

both r units of pressure itself..but when the system is in
vacuum then the pressure measured in mmwc and the positive
pressure measured by kg/cm2.so for low pressure mmwc used
and for high pressure kg/cm2 is used..

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