The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

Section 52.—LEVELLING AND PLUMBING.

The common spirit level and plumbline are ordinarily employed, as also the surveyor’s telescope and spirit level or “Dumpy.”

[986]. Gravitation level.

[987]. Plumbline and square.

[988]. Water tube level; the tube may be carried a long distance and round corners, &c., in any direction below the water level.

[989]. Spirit level plumbing square.

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