Sun Feb 07, 2016 11:45 am by PaulH
I found this on another forum. From someone who apparently used one regularly. Hope it helps.
I had one a while back, after you set up your wheel with the cones and shaft, set the assembly up on the stand, let the heavy side settle to the bottom, attach bar with sliding weight vertically (up and down) and snug set screw, then turn wheel and bar assembly 1/4 turn clockwise so the bar is now horizontal, now slide the weight to the right until the weight balances the whole assembly, now take note of the reading in oz. Return weight to center and attach the pointer gizzy from the right side (light side) onto the sliding weight, making sure the weight is in the center rotate pointer one direction until it stops and mark the tire with a chalk then rotate pointer the opposite direction until it stops and make another mark, these marks are where you attach the weights on both sides of the rim. Example, lets say it took 3/4 of an oz to balance tire with the sliding weight and you made both your marks, now you attach 4, 3/4 weights, 2 on the front side of rim and 2 on the inside. How's that, clear as mud? Good luck! I used mine for many years.