I believe that after learning about transit, and being able to actually be hands on with my work, I believe that this was an important learning step that can help me in the outside world if i were to choose to go into that field. The quiz was a very important learning experience. A transit level is an optical instrument, or a telescope, complete with a built-in spirit level that is mounted on a tripod. Transit levels are used mainly for surveying and building, but they can be used to determine the relative position of lines and objects as well.