spirit level (noun)

1. The character in the novel used a spirit level to ensure that the table he was building was perfectly balanced.

2. As a romantic gesture, he bought her a spirit level so they could work on DIY projects together.

3. In the science fiction novel, the astronauts used a futuristic spirit level to build structures on an alien planet.

4. The fashion designer incorporated a miniature spirit level into the design of her clothes to create an innovative and avant-garde look.