That's very similar, but it doesnt have they same "hydraulic piston and reservoir system" described/pictured in that PS article.. I'll try to post some of mine tomorrow..
Nice vise though, thanks for the post.
I have had this vise for ever, it was my fathers, and I never really noticed (believe it or not..) until recently that it has this funky mechanism up front. It says "PowRscrew near the handle upon closer inspection.. I dont think the hydraulic valve is still functioning, but it still operates...