Everyone here (including me) seems to use the Haimer 3d-taster. At a local tradeshow I had the opportunity to examine a very similar product from Tschorn (see Tschorn 3D Testers - Penn Tool Co., Inc). It is slightly smaller than the Haimer and is coolant proof at about the same price. Their DREHplus model has a cylindrical rather than ball probe tip which would be great in the lathe. Has anyone had any experience with this brand?