Example: A metric screw thread is being inspected using the two-wire method in order to measure its effective diameter and the following data is generated: pitch = 1.5mm, diameter of the best size wire = 0.866 mm, distance over the wires = 26.58mm, and thread angle = 60°. Determine the effective diameter of the screw thread.
Example: Determine the effective diameter of a metric screw using the three-wire method. The following data is available: diameter of the best size wire = 0.740mm, distance over the wires = 25.58 mm, and pitch = 1.25mm.
Example: Derive the expression for the best-size wire in a two-wire method. A metric screw thread is being inspected using the two-wire method in order to measure its effective diameter and the following data is generated: pitch = 1.5mm, diameter of the best size wire = 0.866mm, distance over the wires = 26.58mm, and thread angle = 60°. Determine the effective diameter of the screw thread.