A clarification to my last post:

I too use a GP incident meter when I set my wing incidence. My prior comment was in regards to "mounting" (i.e. gluing/permanently affixing) the stab or wing tube. The actual mounting of the wing and stab tubes is best done on a flat surface making precise measurements. The incidence meter comes into play when adjusting the wing adjusters (if you use them) after the stab and wing are set. It's also useful in measuring/adjusting the engine incidence.

I have two GP incidence meters. Personally I'm not very happy with them because the free-swinging laser doesn't seem to consistently come to rest at the same location. If I tap it slightly it will swing back and forth and sometimes it comes back to the same location, other times it doesn't. Maybe mine just doesn't have a very smooth pivot arm, but I can't be confident from measurement to measurement that I will get the same reading.

BTW, the Budd Engineering LMS device is for checking equal elevator deflection, not for incidence.

KeithB