Laser marking is also available. Accuracy is defined as the degree of conformity of a measure to a standard or true value. The most accurate measurement of small hole dimensions is provided through use of Lenox Laser s flow rate versus hole size, using the water displacement-pipette method. We maintain flow rate certified small holes for use as in-house standards. The Decay Meter is a flow rate versus time method.
Gas flow through a small orifice produces mercury column motion past the photo-diode assemblies.
The time differential is a function of the flow rate which varies with orifice size.