Works well but is very fragile. If you sit or step on it, it's history. Too bad they didn't make the plastic case a little thicker. Just be gentle with it when you use it. You can't throw away your toolbox, it will go bad. SECRET OF THE BATTERY. I have purchased three of these gauges and all three have been DEAD BATTERY and FIXED. When buying these measuring devices, make sure that you buy particularly high-quality batteries.