We may know what someone else is saying when they mention a Carpenter’s Bevel, Sliding T-Bevel or any number of phrases with two or more of the words, Carpenter’s, Universal, Adjustable, T, Sliding, Bevel, Square, Angle, or Gage combined, but there is no guessing what they might end up calling it. Perhaps this oddity needs a scientific name. limuo lignarii or something like it.
The Superior Works Sliding Bevel Gauge is definitely a contender for the best bevel gauge. This video shows it off.
It is definitely one to covet.[/url] The price is not listed, so it might be a bit pricy to me.
Lee Valley Tools has three of the nicest bevel gauges, The Starrett, Veritas and the Shinwa Aluminum Sliding Bevel. I have the Shinwa Aluminum Sliding Bevel and it is one of my personal favorites, despite the fact that I did not make it.
For sheer beauty, The Australian Version from Vespers, looks like the best of them.
While these are not bevel gauges, bevel gauges are enhanced by the ability to set them. I have the Veritas Bevel Gauge Setter from Lee Valley, and I use it whenever I am making the odd dovetail. Woodpeckers is making another one time tool, that is similar, but larger. It does not have the locking slide for repeating angles, but it is larger which may mean greater precision and more angle choices.
I may have obtained what is currently one of the hardest to obtain bevel gauges, The Pitch Square, and it may well be the best bevel gauge of them all. It depends on your view I suppose, but it is the only one here that could be called heavy duty, and apart from the extreme angles the Starrett can do, this can do everything the others listed above can do and a bit more.
The Pitch Square