1. This tool is quite fine to use as it meets the criteria of control - i.e., control in that you don't overdo it and collapse the wheel. It has been calibrated for the wheel in question to ensure the force applied is within the limits of the wheel AND achieves the desired stress relief. This tool is faster...
2. Hard parallel squeeze of folks is very inexpensive - you have your hands already assuming you are still alive - but takes longer per wheel.
=8-)
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life