PEC Sliding T-Bevel
I "discovered" PEC tools of California and was so impressed I bought some of their stuff to put it to the test of daily use. I am still impressed and I now recommend PEC's premium line of layout tools. I really like their sliding T-Bevel. A sliding T-bevel is used for both laying out and transferring both inside and outside angles. This PEC model also fits nicely in my hand.
I'm not 100% pleased with this product as the locking mechanism is not perfect. It will do as a serviceable secondary sliding bevel in my collection when I need to keep track of several angles but unfortunately it won't be the first sliding bevel I reach for. The quality/material is still solid as PEC tools tend to be. Regardless, I don't mind supporting Rob Cosman as I've learned a lot from his youtube videos and he is doing a lot of good in this world.