Something else I'll point out about the Parf Guide system is that it can be used for other things too - the system includes a couple of dogs and long rules that connect to take advantage of Pythagoras to get the angles right (pun!). I've since used the rules for all manner of whacky things, from spacing dowels in long workpieces to acting as low profile router guides, and the dogs are exactly that, a couple of perfectly accurate stainless steel dogs.
The first test piece I cut ended up as a very flexible panel sled for my tablesaw and is still in regular use: https://www.chillyspoon.com/blog/201...-in-10-minutes
Like JayZeus I'm not saying "go out and buy the Parf Guide system" because it is indeed nut clenchingly expensive but I considered it a good investment for me because I could see future uses.
In fact, I'm half-way through updating my bench and one of the steps will be a panel flush with my inner-vise face that I'll cut two rows of dog holes in - using the Parf Guide.