Spirit Bubble Level Measuring Tools, Photo Frame Wall Level Bubble Level Picture Hanging Measuring Tools (Yellow)

One of them was off fore sure. Another one seems off just a tad but is ok for what I am doing. Good buy for someone that is doing some DIY in your back yard. Depending on the size of your product you may want to get the 10 Pack. One off so gets 4 stars from me.

Make sure you check each one against a known good level. You may want to glue the good one's in place too, as the level bar will shift/come out.

The glass bubble keeps falling out after some rigorous use