level *****
spirit level

I did do a sort of sudden spin around on the spirit level.

Hugh, maybe you didn't notice but we don't even have a spirit level.

A spirit level is usually found on the head of combination squares.

A spirit level on the sight allowed it to be checked.

The device serves the same purpose as a spirit level.

There is an ascending scale of spirit levels above the earth.

Use a spirit level to the make sure the forms are level.

He designed and built it without even a slide rule or a spirit level in his back pocket.

The hinge itself must also be horizontal, using a spirit level.

Simply line up the shelf in position, using a spirit level, before permanent fixing for a really professional result.