The apparatus may also be used with a conventional plumb bob, if desired.ġ. The apparatus allows a single person to check plumb lines for walls and the like, thus providing greater efficiency and economy in building construction. The upper fixture may include a wind shield or guard, if desired, so provide greater stability for the plumb bob. The target and upper fixture may be connected by a telescoping column, if desired. Apparatus providing for use of the plumb bob by a single person is also disclosed, comprising an upper fixture from which the plumb bob is suspended, an extension arm, and a target. With the use of a laser to provide a plumb line of coherent light which beam does not spread, the plumb bob may be suspended from a relatively short line in order to dampen oscillations more quickly. The laser device is affixed within the plumb bob body to preclude relative movement therebetween, to ensure accuracy for the device. A laser plumb bob uses a conventional blumb bob body, hollowed to include a laser device therein.
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