The Uba Project equalisation tool is an ingenious device to show you how much pressure you need to equalise, but what technique you are using. From the Frenzel equalisation technique, to the mouthfill, constant pressure, reverse packing and more, you can see where you're going right, what needs improvement and can practice at any time away from the water. So how does it work, why do you need one, and is it worth the money? Here's our comprehensive review of the Uba Project equalisation tool.