i dont own a scale...it doesnt concern me at all....i have enuff to worry about while hunting/shooting than my arrows not being the exact same weight...
i know the point of a accurate scale....but +/- 1.5 grains isnt going to make a noticable difference in your arrow flight! so why concern yourself with it???....i think sometimes guys tend to overthink something thats as primative as shooting a bow or hunting.... whether your bow is the newest tech advancement or not...archery is still a very primal beast.