Chains wear out over time and become elongated. This can lead to poor performance and even damage other parts. Though many refer to this wear as chain stretch, none of the parts are actually being stretched over time. Instead, chain wear is solely based on an increase in pin to pin distance. This is caused only by wear to the chain pins and mating holes on the inner links. Normal wear that may occur to the chain rollers does not contribute to overall chain wear, but in order to accurately measure the increase in pin to pin distance, the play in the rollers must be accounted for. The three point measurement system used on the Chain Checker Plus accomplishes this by pushing both rollers in the same direction during measurement, instead of in opposite directions, as is the case with common two-point measurement tools. As a result, the Chain Checker Plus achieves a true measure of the pin to pin distance.