Chalk line protracting tool

Details Chalk line protracting tool Chalk line protracting tool

1978-12-04

1980-02-26

Haroian, Harry N.

Geometrical instruments

Straightedge type

Cord type

33332, 33339, 33374, G01B 1962

Patent

active

041898443

ABSTRACT:
A chalk line protracting tool comprising a housing defining a compartment for holding chalk and line; a chalk line guide; and a level. A chalk line is fed from a manually operated reel, through an aperture between the compartment and the exterior of the housing, in a straight line to the guide and is protracted in a continued straight line for a desired distance where the line may be snapped against a surface for marking. The level is in a known angular relationship with the aperture guide axis whereby a protracted chalk line along the axis may provide a marking of desired length and at a known angle relative to level.

REFERENCES:
patent: 1654164 (1927-12-01), Eldridge
patent: 2376407 (1945-05-01), Wells

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