To determine the outside diameter of a spring, measure the wire size, double it, and add it to the inside diameter.

Question

Quizplus · Accepted Answer

To find the outside diameter of a spring, you measure the wire diameter, double it (because the wire diameter contributes to both sides of the spring's diameter), and then add this total to the inside diameter of the spring. This accounts for the thickness of the spring wire on both sides, giving you the overall outside diameter.

To Determine the Outside Diameter of a Spring, Measure the Wire