Measuring equipment in curling is used to determine precise readings on the positioning of rocks from one another. If rocks are seemingly close when determined by eye, these devices can be used to break ties or settle scores. Measuring equipment can also be used to make sure a rock is in play, or in the house, after it's thrown and landed.
There are several different types of measures used for different occasions:
The general procedure for measuring is as follows:
PRO TIP: Be sure to never apply too much pressure when measuring, never pass back over a rock, and never swing counter clockwise as all of these can move rock positioning.