Spirit level accessory for the electric drill

Details Spirit level accessory for the electric drill Spirit level accessory for the electric drill

1988-02-01

1988-11-22

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Structurally installed including relation to feature thereof

33372, 33390, B23B 4514, G01C 928

Patent

active

047855444

ABSTRACT:
A spirit level accessory for an electric drill is provided and consists of a clamp member to fit on mounting surface of the electric drill, a dial member mounted on the clamp member and adjustable to obtain correct position with respect to center line of the electric drill, a bracket member held at any desired angle to the dial member by a spring force, a spirit level member held by the bracket member and a cover member having a mirrored inside surface and hinged on the spirit level member to protect the spirit level member against damage when not in use, allowing the spirit level member to be viewed when fully opened and viewed from the mirrored inside surface when halfway opened.

REFERENCES:
patent: 2756512 (1956-07-01), Pettit
patent: 3664032 (1972-05-01), Tomdkins
patent: 4457078 (1984-07-01), Suchy

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