I have reached the end on this thread (from my perspective). I got a few minutes to play around with my Milwaukee laser measure this afternoon. Intention was just to take a look at measuring the accuracy directly. Method was going to be taking a few measurements at varying distances from the saw blade. As a reference, I intended to use my dial indicator. By referencing one measurement to another one, I should have been able to eke out a single point accuracy estimate for the Milwaukee laser (of course this would include any inaccuracy of the dial indicator). Unfortunately, what I ran into is as follows....My Milwaukee laser measure would tend to get "stuck" on certain readings. For example, I had a reading of 8 5/16", but when I attempted to move the laser measure by 1/16" to 8 1/4" I could NEVER reach it no matter how carefully I slid it. It would always undershoot (8 9/32") or overshoot (8 7/32"). So, it is odd because it appears to have a resolution of 1/32" and clearly it does to go from a reading of 8 5/16" -> 8 9/32". The fact that I could never reach 8 1/4" seems to tell me there is a linearity problem with the measurement readout on this device. Perhaps the Bosch or other brands are better, or maybe I am seeing issues with using the sawblade as a target. Anyway, just wanted to share what I am seeing in case anyone is interested, or to spare anyone else from attempting to go down this path. I can easily move my fence 1/16", so I don't think my problem of sliding the unit was related to human error (at least not in regard to hand dexterity).
P.S. I think I kind of noticed this problem while up on the ladder measuring for my LED installation. In trying to approach a particular measurement, it would tend to jump over a measurement that I was trying to hit sometimes.