I modded my waterline marking jig that I posted about yesterday. I drilled a 3/32″ hole above the pencil hole for a 3/32″ steel rod (pointed on one end) to be inserted so that the jig can also be used for taking measurements or scribing. You can also hang a level off the back end to check if it is level.
I originally drilled a 1/16″ hole for a brass rod that I had laying around, but it was a little too “bendy” Steel works much better.
