Thanks for the link Wheels, if it had a swivel base it would work for the project I have in mind. I'm just starting to tool up and have no milling experience. I'm trying to make a tangential tool holder for the lathe, I need to mill a face of a 1"x1"x1/2" piece of steel at 12* then while this face is parallel with the table I want to swivel it 12* and mill a 1/4"groove and drill and tap a hole for the retaining screw. The HSS tool bit fits in this groove, hope this makes sense. I thought an angle vise with a swivel base would be handy for many set ups but I don't want to buy one who's jaws aren't even square as a precious poster mentioned, as I said I've had mixed results with grizzly tools. The Muncy store is within driving distance and I enjoy going there and checking things out.
It just occurred to me that I could hold the sine vise in my swivel vise and have both features. the only down side would be less capacity but it certainly should work for this project.