초록 ▼

The present invention relates to a plumb-bob and magnet combination for attachment to a beam. The plumb-bob and magnet combination for attachment to a beam includes a magnet having a top flat surface that is connected to the base, the magnet having two opposing sides that contain recesses, a hollow

The present invention relates to a plumb-bob and magnet combination for attachment to a beam. The plumb-bob and magnet combination for attachment to a beam includes a magnet having a top flat surface that is connected to the base, the magnet having two opposing sides that contain recesses, a hollow casing for encompassing a string of the plumb-bob and having a top surface slidable along the magnet, the hollow casing including lips on the top surface for sliding engagement with the recesses on the sides of the magnet, a lock on one of the lips of the casing and being cam operated by a lever that moves in the direction of an arc on the top surface of the casing for locking and unlocking the casing to the magnet, and a cantilever extending from the casing and having a free end with an aex from which the string hangs with a weight at the free end, the string being wound in the casing.

대표청구항 ▼

Plumb-bob and magnet combination for attachment to a beam, comprising: a) a magnet having a top flat surface that is connected to the beam, said magnet having two opposing sides that contain recesses; b) a hollow casing for encompassing a string of the plumb-bob and having a top surface slideable al

Plumb-bob and magnet combination for attachment to a beam, comprising: a) a magnet having a top flat surface that is connected to the beam, said magnet having two opposing sides that contain recesses; b) a hollow casing for encompassing a string of the plumb-bob and having a top surface slideable along said magnet, said hollow casing including engagement means on said top surface for sliding engagement with the recesses on the sides of said magnet; c) a lock on said engagement means of said casing and being cam operated by a lever that moves in the direction of an arc on said top surface of said casing for locking and unlocking said casing to said magnet; and d) a cantilever extending from said casing and having a free end with an apex from which said string hangs with a weight at said free end, said string being wound in said casing.