This one's from Chuck Pinnell http://www.pinnellcustomleather.com for those of us who use the Angle Pro or similar incidence meters.
I was in Chuck's shop the other day helping set up one of his planes and he pulled out the trusted Angle Pro incidence meter.
The only difference was that he didn't fuss with trying to get the screws locked to get the thing to stay in place.
He just pulled it apart a bit and put it right on the wing and then another on the tail.
Here's his secret......
"Who'd-a-thunk" something as simple as a rubber band would make incidence measuring so much easier.......