Electronically inclined to stay on the level

Beard, J.
February 1992
New Scientist;2/1/92, Vol. 133 Issue 1806, p26
Describes the new SmartLevel produced by Wedge Innovations in San Jose, Calif. It can set a true horizontal, a vertical or any other angle in between to one-tenth of a degree; How it can be reset if it goes out of kilter; How it works.


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