Device for recording profiles along a line of a rotating object

Hello, probably current methods deliver way more accuracy than I need, but I am searching for a device which will record the circumference/outer surface of objects that are approx 3 cm × 3 cm to 10 × 10 cm (approx. a centumeter thick) and will generate a polyline that will be exportable to formats such as .svg. In fact we need this in Archaeology to record artefacts, usually the profile of ceramic sherds. Traditionally you’d use profile gauges. Now there are other laser driven devices, which however, have weaknesses due to the lack of accuracy. We might use stationary photogrammetry devices constructing whole 3D models and then take a profile, however this doesn’t seem to be efficient. We already have structured light Scanners with accuracies up to 0,05 mm, however the process takes too long, the accuracy is not satisfactory and traditional methods are faster and better. What we ideally need is a device that records the profile along a line of an (asymmetrical) object that is rotating along a specified axis and has the capability of exporting the polyline result. I guess the real accuracy needs to be somewhere 0,1 mm in order to produce good results. If there aren’t fitting devices, is it possible to purchase specific sensors and build it our own (if there are any software librabries facilitating the calculations?) or will this be too complicated? I will be grateful for any recommendations, thank you very much!