Patent ID: 6948253

Claim:
A plumb-bob comprising: a) a body section having a connecting device removably connected to a first end thereof; b) a fixing element having: i) an upper bored portion on a first fixing end; and ii) a lower bored portion on a second fixing end communicating with the upper bored portion, the upper bored portion having a diameter that is larger than a diameter of the lower bored portion; and c) a point section having: i) a shank; ii) a flange located on the shank; and iii) at least one conical pointed section located on an end of the shank, wherein a second end of the body section is threadedly connected to the first fixing end of the fixing element; the shank is inserted through the upper bored portion and the lower bored portion, the flange being located in the upper bored portion and selectively fixed between the body section and the fixing element, a first conical pointed section of the at least one conical pointed section protruding downwardly from the second fixing end of the fixing element.