Measuring Wire Rope Diameter

  Wire Rope is always measured across the largest diameter that will fit inside a true circle. Wire Rope is always made larger, not smaller, than the nominal diameter. However, wear tends to reduce rope diameter. The allowable tolerances for new Type N wire rope, 3/4" diameter, is 1/32" oversize. In standard practice, the nominal diameter is the minimum diameter. A rope is not considered oversized until its diameter exceeds 1/32" oversize.