Hand levels help contractors to get a relatively accurate approximation of height and distance without having to use large leveling rods or electronic equipment. With hand sight levels, you can get a more accurate reading than with a basic spirit level. These levels are designed with a telescopic lens that lets builders and contractors do "rough leveling" that is sufficient for most construction projects.
The hand levels surveying applications require are accurate enough to confirm measurements while a project is in progress. Hand levels are ideal for landscapers, builders, fencing, bricklaying, and other common applications. They are also appropriate for professional applications and for DIY projects.