2. Sag Scale
One day, perhaps we will evolve into little alien-like creatures who all weigh the same. Until then, we need a tool that can help tell us just much our arses of various sizes are sagging the rear suspension on our dirtbikes so that it can be optimized to help the suspension work through its stroke as the manufacturer intended. You can do that with a tape measure, but a folding sag scale works even better because it has a nice little nub that serves as a fixed anchor point by slipping inside your rear axle. It can be used to help determine front suspension sag as well.
Ours: Motion Pro Folding Sag Scale, $29.95
www.motionpro.com