Combination level and T-square

Details Combination level and T-square Combination level and T-square

1996-08-01

1998-11-10

Fulton, Christopher W.

Geometrical instruments

Straightedge type

Combined with level

33427, 33464, 33478, 33479, B43L 702, G01C 900

Patent

active

058326189

ABSTRACT:
A combination level and T-square comprising an elongate level sensing section and an elongate T-bar section which can be alternately removed from or rigidly connected to the level sensing section in three locations to form three different configurations, a T-shape, a left-hand L-shape and a right-hand L-shape. The invention has two engagement hand screws; one for securing a sliding tongue into the level sensing section and the other for securing the T-bar to the tongue in one of the three desired configurations. The T-bar may be positioned further or closer to the level sensing section by sliding the tongue telescopically within the level sensing section.

REFERENCES:
patent: 636191 (1899-10-01), Wright
patent: 649422 (1900-05-01), Fry et al.
patent: 747850 (1903-12-01), Bihlman
patent: 1119450 (1914-12-01), Parr
patent: 1182730 (1916-05-01), Anderson
patent: 4599805 (1986-07-01), Padilla
patent: 4910876 (1990-03-01), Channell
patent: 5062213 (1991-11-01), Kolesky
patent: 5131164 (1992-07-01), Miller
patent: 5353509 (1994-10-01), Black
patent: 5433011 (1995-07-01), Scarborough et al.

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