LarryD:
PCB vice.
You may have to tweek the clamps with a file to adjust the fit.These are handy to hold your PCBs while you solder components on the board.
At $7.00 they are reasonably priced.
The two holes in the base are for securing the fixture to a heavier sub-surface..
Getting ready to make one of these. Just need to get in the garage and do it.
What do you have for putting solder paste on small pads?