A scale is always a scale...ruler always a ruler.....I don't see this PMB system is any worst then HUDY or Integy....they are all the same (except the name and packaging)
As long as you can mount the guages onto the wheel nice and clean (without play).........the reading should be very accurate.
I have the Integy one for about 5 years, the 3 degree negative camber on my car is still read -3 degree on my setup system after 5 years.
P.S....just don't buy the clear plastic version........those white lines and numbers are hard to read under strong lights or sun lights.
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