SME's approach to everything is one of extreme accuracy and leaves nothing to chance. Their method of alignment is simple and easy to effect. The only criticism I have is that the hole of the alignment protractor is a loose fit over the plastic sleeve that fits over the spindle allowing the possibility of variable results. In any event, there are a number of different alignment theories about the location of the null points and other parameters such as overhang etc. that I wonder if alignment is little more than a guess or an opinion. The most commonly used one, Baerwald's, is said to be inaccurate because it was an approximation and that the Loefgren one is more accurate. Then their is Stevenson's and a number of others. So I don't know????
