Chrony F1 Master
I really like this chronograph. It works great and gives accurate results. The only things I would change are the white light de-fusers, and the instructions. Each of the two diffusers are in three pieces that you have to put together. They don't always go together easily, or stay together.
The instructions also could be a little more comprehensive on setting the unit up inside. I had set the unit up in my garage, but had to put it directly under the overhead lights in my garage for it to work. The company sells a light kit which would solve that problem, but they don't say that it is needed for use inside.
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