Is it an electronic level that is used to find the high and low points in a room so you can lay out flooring or cabinets?
This is it! Technically it is a precision altimeter. It is so sensitive that it will measure the thickness of a sheet of paper. I used it primarily in leveling houses, but can be used anywhere that you need to establish a level plane or grade. When I first started leveling/raising houses, it would take hours to establish baselines for the slab/foundation and I needed a helper. With this tool I could do it in 15 minutes by myself. http://ziplevel.com/
Wow, in for the win on a last ditch wild guess. That was a tough one Kyle. I'm headed out of town this afternoon, so hopefully this will be an easy one. Its used outside and while this one is aluminum, some are made with plastic handles.