pitch and the space between the coils?The pitch is the distance from center to center of the wire in adjacent active coils. The space between the coils, is the distance from end to end of the wire in adjacent active coils.Q4: What the best tool for measuring the dimensions of a spring?The?most accurate way is with a pair of calipers, especially if it's a smaller spring. The next best is a sliding rule.Each Order Contains:●?Copy of the Material Test Report●?Certificate of Origin●? Inspecti