Adjustable level

Details Adjustable level Adjustable level

1985-01-31

1986-08-26

Little, Willis

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33381, 33391, 33375, G01C 900

Patent

active

046074376

ABSTRACT:
An adjustable level apparatus (10) comprising a core level unit (11) provided with a pair of extension arm units (12) that are formed by upper (25) and lower (26) housing casings that are connected together through the core level unit (11), and the extension arm units (12) are further provided with extension leg units (13) on their ends, having an extension leg that is extendable perpendicular to the axis of reciprocation of the extension arm units (12) on the core level unit (11).

REFERENCES:
patent: 457992 (1891-08-01), Gillette
patent: 832326 (1906-10-01), Kleinbauer
patent: 1029744 (1912-06-01), Desilets
patent: 2691829 (1954-10-01), Arana
patent: 2692440 (1954-10-01), Walters
patent: 2743528 (1956-05-01), Posthauer, Sr.
patent: 2879606 (1959-03-01), Olivere
patent: 3104477 (1963-09-01), Edwill
patent: 3161964 (1964-12-01), Myles
patent: 3811197 (1974-05-01), Moore et al.

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