A Wixey gauge is on my wish list but I guess I am a Luddite, I still use a draftsman's triangle when I need a 45 degree setting to be right.
Depth of cut is set with some home made wooden blocks about 4x2 inches that vary in thickness by 1/16. I have them from 1/8 to about an inch and a half. I can stack them when necessary. I made them years ago for my Skil biscuit joiner which has a crummy fence. I works fine if you use blocks like this to set the fence.