I used this to level my portable easel during setup and it's perfect. This 5" level is more accurate than most small key or sticker levels, and the magnetic end allows it to be hung on any steel part (nails, staples) on my aluminum easel. I took a 10ft steel tape measure and it had no problems (I could swing it!), so picking up most fallen nails probably wouldn't be a problem. The yellow portion of the bubble is actually the same size as my 24" level and just as accurate. When I tested it, I'm very glad I got it on sale for only $2!