An apparatus and method for performing optical caliper measurements remotely, including an unmanned aerial vehicle, a camera attached to the unmanned aerial vehicle, and an optical caliper measurement tool attached to the unmanned aerial vehicle, where the optical caliper measurement tool includes a mount, a laser source attached to the mount, and a beam splitter attached to the mount, where the laser source is configured to direct a laser beam through the beam splitter to split the laser beam into two parallel laser beams separated by a fixed distance.