Drywall T-square

Details Drywall T-square Drywall T-square

1989-09-11

1990-09-18

Haroian, Harry N.

Geometrical instruments

Scriber

Straight-line

33 42, B43L 1300

Patent

active

049569198

ABSTRACT:
A first positioning rule is oriented for mounting overlying edge portions of associated plaster drywall sheets. A second rule slidably mounted to the first rule includes a series of slots for receiving a cutting tool therewithin to effect scoring and cutting of the associated drywall sheet. The slots include overlying plate members of metallic construction received within recesses of the drywall rule to avoid damage to the rule in use of a cutting tool.

REFERENCES:
patent: 581437 (1897-04-01), Silliker
patent: 840928 (1907-01-01), Gamston et al.
patent: 991693 (1911-05-01), Brown
patent: 1624280 (1927-04-01), Rasmusen
patent: 3378927 (1968-04-01), Lowery

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