How to Determine the Thickness of a Rope Chain

By Will Charpentier

When a rope chain is worn as bling, whether it's silver, gold, platinum, or stainless steel, you might wonder just how thick the chain is. Measuring the thickness of a rope chain uses the same procedure as measuring the diameter -- the thickness -- of wire rope, only on a much smaller scale, using millimeters instead of inches. A caliper gives an instant and accurate reading of the thickness of a chain.

Calipers come with a circular analog readout or an electronic digital readout.

Step 1

Open the jaws of the caliper so that the chain can fit between them.

Step 2

Turn the chain so that the outermost points of the metal wires that make up the rope chain are between the jaws of the caliper and touching the jaws.

Step 3

Close the jaws and read the thickness of the chain on the caliper's readout.