I was a little disappointed that the arm does not stay extended the way it showed in the picture. The turn knobs/wing nuts, do not tighten enough to hold the arm straight. It also tips because the weight does not hold it properly grounded, so I had to find a way to hook it to the side of the desk but still had issues with the arms. The magnifier and light are okay, but you have to hold it because the arm wants to go up. There is no wing nut at the bottom to hold it tightly in the down position. My husband wants to keep it because he needs the magnifying glass and light and puts a weight on the arm to hold it still. I only recommend it because it has possibilities with a few modifications. As seniors we sometimes need a light like this to see small print, but it is hard to use hands-free at certain positions.