I bought something similar & found the graduations form end to end to be out by 1/8". Complained to the seller who sent replacements (that were equally flawed. Managed to match a couple near enough with a bit of filing. Something I noticed at the time was the plates welded to the bottom of the posts were inconsistent in thickness, some were tapered & some were welded on crooked. To use one as a single ended mill a bit of time would need to be spent truing the angles upI'm currently working with one of these. I found there was a full inch deviation from saw end to bar end. If you run it open ended, check that out.