The BullseyeBore attachment is pretty keen:

The outer ring helps estimate alignment, the two inner rings are for estimating depth. Unfortunately, it isn't actually for sale.

Here are some example videos for alignment and depth:

Anti-Social Media


Similar Posts

Wooden Tommy Guns

My brother and his bride decided on a gangster-themed wedding and I decided it would be a dandy idea to make a wooden Tommy Gun for each groomsman.

Mom's Book Cart

Last fall I was told what I would be getting/making my mother for Christmas...