What is the use of Three wire method ?
The accurate measurement of thread pitch diameter, which may be perfect as to form and lead, presents certain difficulties which result in some uncertainty as to its true value. The adoption of a standard uniform practice in making such measurements is, therefore, desirable in order to reduce such uncertainty of measurement to a minimum. The “three-wire method” of measuring thread pitch diameter, has been found to be the most generally satisfactory method when properly carried out, and is recommended for universal use in the direct measurement of thread plug and thread setting plug gauges.
How to Calculate Diameter of Measuring Wires?
Diameter of Measuring Wires calculator uses Wire Diameter = (Micrometer Reading+Screw Pitch-Pitch Diameter)/3.23594 to calculate the Wire Diameter, The Diameter of Measuring Wires formula is defined as the wire diameter used in three-wire test method. Wire Diameter is denoted by G symbol.
How to calculate Diameter of Measuring Wires using this online calculator? To use this online calculator for Diameter of Measuring Wires, enter Micrometer Reading (M), Screw Pitch (P) & Pitch Diameter (D) and hit the calculate button. Here is how the Diameter of Measuring Wires calculation can be explained with given input values -> 1297.923 = (0.0082+0.003-0.007)/3.23594.