Park Tool Wag-4 Professional Wheel Alignment Gauge

Awesome product!

I am glad I bought this. I do not know if another dishing tool would have worked or if a makeshift one would have been fine, but this tool definitely does what it says. I felt very professional testing the dishing on a recent rear wheel rebuild. So, this is a great tool for a beginner like me. My only complaint is that I find adjustment to be somewhat difficult and imprecise. The screw-on gauge makes it hard to make fine adjustments.

If you know what this is the odds are you are getting it. Beside a hand built dishing tool this works like a champ. Make sure and store it correctly when not in use. I have some scrapes in the plastic from storage and being dropped that I have had to file down to make it true.

Yes, one can build and fabricate a tool to check dishing of a bike wheel, but I didnt want to take the time. The Amazon price for this Park Tool was justifiable to me, and it will be useful on any wheel I see myself working on for the foreseeable future, unlike my truing stand that is now obsolete with 29 PLUS wheels in BOOST hubs. The tool, as expected from Park Tools, is well made, easy to use, and holds its accuracy. I did add the washer hack as mentioned in other reviews to make the hand knob tightening not move the indicator bar. Park really should add another washer to fix that quirk... And the Park Tool blue looks nice on my garage shop wall.

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.

Probably not the best bang for the buck, but worked fine to verify that all my wheels are probably dished

The first time I used this otherwise nicely-made tool it was apparent that the knob that secures the depth feeler was difficult to adjust just right so that the feeler didnt move when I secured it for depth. I added a stainless steel 10 mm I.D. washer between the knob and the feeler and that solved the problem (the washer fits exactly within the recess in which the feeler slides). I can now adjust the knob so that the feeler slides easily for depth, and then tighten the knob just a bit to hold the feeler without it moving off the depth setting. A 17 cent fix that I would recommend you try. P.S. (The manual doesnt mention that the slider blocks can be secured for width by slightly tightening the screws on the bottom).

If you want to take care of all aspects of your bike maintenance then this is a great buy

What I do like about this gauge is that: + The black plastic blocks act as a stand-off from the rim, so the gauge can be used with a tire mounted and inflated (unless its a **really** fat tire). + The blocks slide, so the gauge can be used with all sorts of rim sizes -- 29/700c? No problem. + The tip of the feeler is bent in so that, in most cases, dish can be checked while the wheel is still mounted in the bike frame or fork, without removing the quick release. This makes it very convenient to use in conjunction with the

If you true/build wheels, this is a must have as I have built tens of sets over the years, but only 30% correctly. You need the right tools for the job as I am proof that anyone can build a wheel, but not everyone can build a wheel right.