I have found the easiest way to measure incidence is to set the plane up so that stab is zero (0) degrees (level) using a small torpedo level. The level is about 10" long and found in any Home Depot, Lowe's or hardware store. With the plane leveled, place the incidence meter on the wing and note the incidence in degrees. Measure both at the fuse and wing tips. Also, remember that if you turn the meter so that it is facing away from the fuse on each wing, the measurements will read opposite. In other words, assume you are reading 1 degree positive on the right wing (and the wing is true), you will read 1 degree negative on the left wing.
To avoid that confusion, I generally face the meter in the same direction on both wings.

One final point, the incidence on the Tiger2 should be zero (0) degrees relative to the stab.

DaveB