a device for determining true horizontal or vertical directions by the centering of a bubble in a slightly curved glass tube or tubes filled with alcohol or ether.
a device for setting horizontal surfaces, consisting of an accurate block of material in which a sealed slightly curved tube partially filled with liquid is set so that the air bubble rests between two marks on the tube when the block is horizontal
noun, Surveying. 1. leveling according to the indications of a spirit level.
- Spirit of enterprise
noun 1. the motivation to set up and succeed in business or commerce
or spirits of hartshorn noun, Chemistry. 1. a colorless, pungent, suffocating, aqueous solution of about 28.5 percent ammonia gas: used chiefly as a detergent, for removing stains and extracting certain vegetable coloring agents, and in the manufacture of ammonium salts.
noun, Pharmacology. 1. ethyl nitrite spirit.