What additional functions can chalk lines have?

	There is actually only one type of chalk line as they are all designed to perform the same basic task, although some chalk lines may have additional features that give them advantages over others. Below is a list of some of the more common features.
belt clip
	Not all chalk lines have them, but the belt clip is a simple curved piece of metal that is usually attached to the chalk line box with a screw. The belt clip allows you to attach the chalk line to your belt so you can quickly access the tool while you work.
Crank with gearbox
	Toothed chalk lines (with a gear ratio above 1:1) allow you to wind the string faster, which means you spend less time and effort. For more information on geared cranks and gear ratios see the page titled: What is the gear ratio of the chalk line?
chalk window
	There are chalk line models that have the added feature of a transparent window on the side of the box so you can see at a glance exactly how much chalk powder you have left. This reduces the chance of running out of chalk halfway through the job.
Tapered plumb end
	Many chalk lines have a tapered end so you can use them as a plumb line to mark accurate vertical lines, check plumb line, and transfer points from floor to ceiling. The tapered dot at the bottom of the chalk line aids accuracy, and you may find that chalk lines without this added feature are difficult to accurately plumb.
	plumb lines A plumb bob is a tool used to create a vertically straight (plumb) reference line. It consists of a piece of rope with a weight attached to one end. A rope is attached to an object and a weight is suspended below. Since gravity will always pull the weight straight down, your string will always be a vertically straight line. Learn more about Plumb Bobs