A further drawback is the large power requirements of incandescent lighting requiring prior art light-emitting plumb-bobs to include various means or preventing accidental battery drainage. ![]() However, incandescent lighting is limited in accuracy due to the dispersion of the projected beam which increases as the distance from the target surface increases. Prior art has addressed this problem by placing downward projecting incandescent lighting within conventional plumb-bobs to improve the accuracy by projecting a beam indicating the point of vertical alignment. The plumb-bob is an indispensable tool for carpenters, masons and the like, but can be somewhat inaccurate due to oscillation of the plumb-bob from factors such as wind, line tension, line length, physical contact etc. The suspension line has a lower end which is secured to the plumb-bob and an upper end that is placed at the point with which vertical alignment is desired in a manner that leaves the plumb-bob freely suspended with the lower, tapered portion indicating the point of alignment. A conventional plumb-bob consists of a substantially conical weighted object wherein the upper, wider portion has a centrally located means for securing a suspension line. The present invention relates generally to vertical alignment devices and, more specifically, to a laser beam emitting plumb-bob. An apparatus for a plumb-bob and suspension line, comprising: a) a conical shaped housing, said housing being wider at its top end and having a flat top end, said housing being substantially pointed on its lower end b) a means for generating a laser beam, said means being cylindrically shaped, said means for generating a laser beam having within a laser driver and a battery c) said housing having a centrally positioned cavity therein for receiving said cylindrically shaped means for generating a laser beam, said cavity having a keyway and said means for generating a laser beam having a key for engaging said keyway d) a removable, threadably attached tip disposed on said lower end of said housing, said tip having a central aperture therein, said aperture for permitting said laser beam to pass therethrough e) said battery being a power source for said laser driver f) an on/off soft touch switch, whereby said means for generating a laser beam is controlled g) means for electrically connecting said laser driver, said battery, and said switch h) a junction box disposed internal said housing, said junction box disposed adjacent said top end of said housing connected to a top end of said cavity, said junction box housing a portion of said electrically connecting means i) said flat top end of said housing having a centrally located attachment for said suspension line protruding upwardly, a socket for recharging said battery located on one side of said attachment and said switch located on the opposite side of said attachment j) said junction box having radially extending passageways for connection to said switch and said socket on said top end of said housing. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.1. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Continue without accepting’ or ‘Customise Cookies’ to decline these cookies, make more detailed choices or learn more. Third parties use cookies for the purposes of displaying and measuring personalised advertisements, generating audience insights, and developing and improving products. This includes using first- and third-party cookies which store or access standard device information such as a unique identifier. If you agree, we will also use cookies to complement your shopping experience across Amazon stores as described in our Cookie Notice. ![]() ![]() We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences, and to provide our services, as detailed in our Cookie Notice.
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