Review on Tabletop Adjustable Standard Camera Projector by Wendell Chapman

This item is stable. It's rated at 11 pounds and I believe in all of that. The main tube is about 1 inch in diameter and the main clamp presses against the about 2 inch thick worktable by default. It can be changed to an additional 1 inch or so thick for a total of 3 inches. There is a neoprene pad to protect the desk surface from scratches. It features a standard 1/4" screw mount found on photographic gear and a 1/4" screw mount ball adapter that can tilt 90 degrees and rotate 360 degrees. It's probably overkill for my intended purpose, but I'm sure it will come in handy at some point, or rather they will come in handy as there are two of them in this set.