File:Cube Spirit Level (6018813911).jpg - Wikipedia
TIL That levels are sometimes referred to as "spirit levels" because the fluid inside was commonly colored spirit or alcohol for contrast. Today the fluid is usually a dyed ethanol because it
Spirit Level History and Use - EngineerSupply
Leveling Tube A transparent tube that is filled with water. The water at the two ends will always be level. Spirit Level Tube incompletely filled with. - ppt download
6Pcs Small Bubble Level Mini Square Bubble Spirit Levels Leveling Tools New | eBay
Vials, the vital components in a spirit level | Hultafors
Vials, the vital components in a spirit level | Hultafors