When you're doing layout work, it's important to be accurate and as exact as possible right from the beginning. Minor errors in the initial layout can translate into major issues down the road. A quality Plumb Bob will allow you to get precise vertical reference readings for the layout of studs and beams of all kinds. Plumb Bobs have been used in the construction trade for 1,000's of years, and have changed little since those early days. Today's modern plumb bob's are constructed out of the highest quality materials to give you the most accurate readings possible. Tools-Plus carries plumb bobs from the leading manufacturers and these tools are guaranteed to give you accurate results quickly and easily.