Swingman wrote:

http://www.leevalley.com/US/wood/pag...,50298&p=69055


It can only be as accurate as the sensor at the sliding "arm" (sorry, I
don't know the appropriate term). I momentarily considered this as a
substitute for a magnetic level+bevel, but what I said above makes me
hesitate. Perhaps someone can vouch for the technology being used? The
issue is mainly academic for me, but it's not uninteresting.