New Park Tool truing stand doesn't seem to be calibrated, calibration seems off out of box I recently purchased a Park Tool TS-2.2 truing stand, however I feel that the calibration is off. I have a wheel that was recently trued at my LBS and there is a significant gap between the rim and the caliper on the right side.

Assuming a trued wheel is on the stand, shouldn't BOTH calipers be set so that they meet the rim at the same time? I assume the point to having calipers on both sides is so that you can true both sides of the rim at the same time, right? Is it most likely the calipers are off or the arms that hold the wheel off?

Has anyone came up with a cheaper way to calibrate these things? I think it is ridiculous how much Park Tool wants for their centering tool...
The 2.2 is not for directly measuring dish, a shop will use a proper dish measuring tool(for time and repeatability) and there are techniques for the home gamer that lacks a dish tool that involve flipping the wheel over in the stand and noting the difference. The caliper is for measuring lateral warp or wobble and radial eccentricity(wheel hop) Only one side of the caliper is needed at any one time, the reason the 2.2 has two sides is that it is sometimes more convenient to adjust to the left and other times to the right especially if you want to improve a slight dish issue while straightening a wobble. Also some folks like to work from the high spot side and others prefer the low spot side. In the high production shop I worked (I'd do about 40 rims per shift, and there were 4 wheel stations) we often bungeed, or jammed with a small wrench/stick, one side of the caliper wide open to make inserting the wheels faster.