[patrickt]

I love to waste money on Cobra tools, but the one nice point of having that valve gapper is that you can watch the needle as you tighten it down -- and you can see how much you have to lean on the adjuster to compensate for the change in gap that comes with tightening it down. If you're building engines, and doing valves on a weekly basis, it's second nature. But when you only gap your valves once every year or so, having a gauge with a face and needle makes it easier.