What is the gear ratio of the chalk line?

Ratio
	Gear ratio is a type of mechanical advantage; this means that it allows you to maximize strength with minimal effort (or vice versa). When the chalk line has a gear ratio greater than 1:1, less force is required to rewind the string.
	Gear ratio 1:1 A 1:1 gear ratio is when two gears of the same size form a gear. Since the rotational input force is equal to the output force, no mechanical advantage is created. Simply put, for every turn of the handle, you get one turn of the reel.
	Can you calculate the gear ratio? The gear ratio can be determined by counting the number of teeth on the two gears and then dividing the number of teeth on the drive gear by the number of teeth on the driven gear. So, if the drive gear has 80 teeth and the driven gear has 20 teeth, you have a 4:1 gear ratio. This means that for every 1 rotation of the input force, you will get 4 rotations of the output force.
	The most common gear ratios Many modern chalk lines have geared handles that give you the ability to wind the line faster and with less effort. The most common gear ratios are 1:1, 2:1, 3:1, 3.5:1, 4:1 and 5:1.
	Which is better? The higher the gear ratio, the faster you can wind the string, for example 5:1 ratio chalk line will wind the string five times faster than 1:1 ratio chalk line.