ReedGeek Plaque & Gauge Set

This is very quick in gauging positioning of the reed on Mouthpiece.
Make job very quick and easy
I will definitely recommend this product to others

I've not really used it but it seems to be a nicely made bit of kit. I get the principle but I fail to see the value in using it really. I just fit my reeds to where I need them and blow them in. If the lay curves on your mouthpiece rails are off then there's not much you can do about that really other than to buy a new one or try to find someone who can work on you mouthpiece at great expense.