Land Surveyors, Land Developers, and Grading Excavators all use hand levels to get a quick idea of where a grade may end up. Hand Levels are also known as sight levels, pocket levels, and abney levels, they are ideal for preliminary land survey work and simple distance estimation on any job site. Hand levels give a quick and easy way when dealing with cut and fill when grading a site for construction. They also work well for seeing if an area of land is generally level or not. However you use your hand level, they are a handy item to have in your truck or pocket.