Park Tool Wag-4 Professional Wheel Alignment Gauge

Not much to say here--the design has been refined over time, and it is state of the art. I like it just fine.

adjusting it is easy, using it is easy, build quality is very good, its light, its blue Not a complicated device but this is a well thought out version and I wouldnt build a wheel without it

I found it easy to use and a good check on the wheel build accuracy. I checked a wheel that was just rebuilt at a local bike shop and found that while the wheel was true, it was a little dished...for those of you used to science terminology, the wheel alignment gauge could be said to check accuracy - how close to the true center mark you have centered the wheel rim. The truing stand (which I really like, by the way) could be said to check the precision - the deviation from the measured center. The analogy may not hold precisely, but it is the closest I can come to a short description of what these tools do. In any case, a good tool.

I can use it with a tire still on the rim.

When you pay for getting racing wheels trued you might expect them to be dished correctly. I got this because I got a rear wheel back that was way off to the left. It turns out that most of my wheels are not correctly dished, because this tool doesnt lie. Now I have the fun of re-dishing most of my wheels, but at least this will help me ensure they are perfectly aligned. It is adjustable for several wheel sizes, and can be used without removing the tires.

Very good product!

Works great, accurate! Only issue is the item is used not new in the package. Item has some cosmetic damage like its been banged around but nothing that affects its accuracy or use.

I cant fault the tool. It is made of good quality and works fine. I just regret the purchase, because I realized I didnt really need the tool to build a wheel when you have a truing stand or at lease the pro stand. Once you true a wheel on a stand that is correctly aligned, the gauge becomes redundant. Live and learn.

Beautiful Park Tool great quality.

fare enough, easy to work with actually so simple and reliable, so light not solid metal but hullos, enjoy your time ;0)