The sheetmetal gauge from Van's, when used with a precision digital level, works very well to set blades within 0.1 degree pitch.
I have my blades set at 71.4 with the Rotax 912 engine. Performance matches Van's published figures and engine/prop run very smooth without need for dynamic balancing.
P/ASEL 1970 Sport Pilot since '04
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
LSRM-A Certificate 2016
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/15 with 48TT - Hobbs now 317