Before Shopping for a Level
Decide what type of projects will need a level. Length is particularly important if you're working with lumber, paver projects or drywall; a long level gives a better measurement. Most levels do double duty as a ruler or straight edge. Some levels are magnetic to allow hands-free use on metal surfaces. Some models feature lights for use in low-light areas. Here are the most common hand tools for finding level and plumb.
Cross-Check Level
Small level used to check horizontal and vertical at the same time.
Digital Level
Battery-operated level displays in degrees, percentages and inches/feet.
Laser Level
Finds level and plumb as well as distance. There are handheld versions for DIYers or tripod-mounted for larger jobs and jobsites.
Line Level
Designed to attach to mason's cord or other string to determine the level of string over a distance.
Plumb Bob
This isn't a traditional level with liquid-filled vials; it's a tool that uses gravity to find plumb. Normally used to locate posts or align wallpaper.
Post Level
Finds level and plumb simultaneously when used to plumb posts, flagpoles, water pipes, railings and decks.
Standard/Carpenter's/Mason's Level
The most common type of level, these range from 24 to 96 inches in length and are available in a variety of materials, such as wood, aluminum or acrylonitrile butadiene styrene (ABS), which is a high-impact resin. Can be named box beam or I-beam. If viewed from the end, a box beam looks like a rectangular box, and an I-beam looks like the letter "I."
Torpedo Level
Measures level/plumb/diagonal in tight spaces. Ranges from 6 to 9 inches; designed to fit in a tool belt or pocket.