I agree on the mechanical movement and what you say about a table, I thought maybe you might be up for a challenge like myself, if someone doesn't need that high end precision then this design would work for that, there is another way to elevate the upper bar but you couldn't raise it only about 20° not 44°, this is the only way I see to accomplish such movement (mechanically)
I'll make a deal with you, I'll give you the measurements of the 3 points of my triangle, you then in return tell me what the T.P.I. are on the screw I'll be making, figure it to where one revolution on the dial would be equal to say .250" - .500" rise on the upper bar ? doesn't matter there to much, just as long as it's nothing oddball, I can change the three measurements on triangle to whatever anytime.
I think you and I could come up with something that would be satisfactory for your home shop machinist,