Keep it simple and easy to setup! Very similar to what I made for my Myford, it expands in the mandrel and is so quick to setup.
In the gear I use (60 teeth) I have spot drilled shallow holes at the tooth base for the common divisions and dropped a spot of coloured paint in them so yellow is 4, brown is 3 etc – saves all that counting of teeth and reduces the risk of getting it wrong!
Alan