Remember all of that math your teachers used to make you do when you were in high school? Beyond telling time, calculating change, and mastering the adult task of paying bills, you were sure you would never use math again. You went into construction or electrical works and did not look back. There is just one problem with that; you use a lot of math in your job all the time! Stranger (and possibly more irritating) still, you have to use a lot of math when you work in rigging and harness equipment.