Adjustable length level device with internal locking mechanism

Details Adjustable length level device with internal locking mechanism Adjustable length level device with internal locking mechanism

1995-11-14

1996-11-26

Will, Thomas B.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

G01C 924, G01C 928

Patent

active

055773273

ABSTRACT:
An expandable level device includes a central housing having a horizontally oriented tubular spirit vial disposed within a front wall thereof. The central housing has an extension rod slidably extending outwardly of opposing end portions thereof. A pair of outer housings each has a vertically oriented tubular spirit vial disposed within a front wall thereof. Each of the outer housings slidably receives a distal end of one of the extension rods therein.

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patent: 3104477 (1963-09-01), Edwill
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patent: 4566200 (1986-01-01), Brady et al.
patent: 4607437 (1986-08-01), McSorley Sr. et al.
patent: 4894925 (1990-01-01), Langmaid
patent: 4928395 (1990-05-01), Good

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