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 Micrometer reading per measurement whitworth?
Micrometer reading per measurement whitworth calculator uses Micrometer Reading of Whitworth = Pitch Diameter of Whitworth+3.16568*Wire Diameter of Whitworth-0.96049*Screw Pitch of Whitworth to calculate the Micrometer Reading of Whitworth, Micrometer reading per measurement whitworth is the reading of an instrument which can measure thickness of very small objects. Micrometer Reading of Whitworth is denoted by Mww symbol.
How to calculate Micrometer reading per measurement whitworth using this online calculator? To use this online calculator for Micrometer reading per measurement whitworth, enter Pitch Diameter of Whitworth (Dww), Wire Diameter of Whitworth (Gww) & Screw Pitch of Whitworth (Pww) and hit the calculate button. Here is how the Micrometer reading per measurement whitworth calculation can be explained with given input values -> 8007.741 = 0.0071+3.16568*0.0012-0.96049*0.00301.