Plastic mini bubble level. Perfect size for leveling your anniversary clock. The level is 1-19/32" - 40.5mm long, 1/2" - 12.7mm wide, and 1/2" - 12.7mm tall. The bubble level itself is securely pressed into the holder, but it can be removed if desired. It is 3/8" - 9.5mm in diameter, and 1-9/16" - 39.7mm long. The holder has a 3/32" - 2.4mm hole drilled out at the bottom.