This is my second one. First one is the 3-axis version, it's on my mill. It has worked fine for 5 years now. This one is for my lathe. Just like the first, it works great. The only slight negative is that these really are designed for mills, all the fancy baked-in arc, pattern, etc. widgets have no use for a lathe. It does let you select 'diameter' or 'radius' mode, but only on the X axis. Otherwise, with their scales, it really rocks. The scales are very accurate, basic setup is easy. The manual does leave much to be desired, not as bad as some versions, but still pretty thin on details. But, there are plenty of YT vids that explain everything. Can't beat the price/functionality.