A lead weight attached to a string is known as what?

A lead weight attached to a string is known as a plumb bob. This tool is used in construction and carpentry to establish a true vertical reference line. When suspended freely, the plumb bob hangs straight down due to gravity, allowing builders and roofers to ensure that elements like walls, columns, and frames are vertical.

The use of a plumb bob is crucial in roofing for ensuring that structures are properly aligned and level, which can prevent issues with water drainage and overall structural integrity. It plays a significant role in maintaining the quality and durability of roofing installations.

In contrast, a level is typically a tool that indicates whether a surface is horizontal or vertical. A chalk line is used to mark straight lines over long distances, often on surfaces like roofs or walls. A measuring stick is a more general tool that aids in obtaining measurements but does not specifically address the vertical alignment that a plumb bob does. Thus, recognizing the unique purpose and function of a plumb bob is essential within the context of roofing practices.