EBayFor simultaneously determining the horizontal and vertical plane for posts, pipes, flag poles, railings. Foldable Design, Save time by quickly aligning ceiling joists for rafters. Includes three spirit level vials providing incomparable accuracy. With 4 magnetic strip and a elastic band for convenient hands-free install. Made of PVC for impact resistance. Package Includes: 2 Pack Foldable Post Level Product description YOTOM Folding Magnetic Post Level YOTOM Post Level is a 5.4" X 7.6" Spirit bubble level that with two level vials and one plumb vial with a sensitivity of 0.001"/Inch for simultaneously determining the horizontal and vertical plane of posts, pipes, and beams, and save time by quickly aligning ceiling joists for rafters. Pack of 2. Foldable Design Made of PVC Impact Resistance Durable Molded Body Foldable Design It has 4 magnets for attaching to metal surfaces and an elastic band for securing to non-metal surfaces for convenient hands-free install, and is made of PVC for impact resistance. Magnet and elastic band design allows hands free use quickly attaches to any post, pole or stringer. Advantages of Folding Design The level folds closed, opens flat, and locks every 15° to accommodate different pipe, post, and beam sizes to 6" in diameter. Features 360 degree of adjustment in 15 degree increments, Folds for easy storage in tool box or pocket. Erect straight posts for a deck with ease with this simple and easy to use design. Extensive Use Post Levels are used in the building trades, engineering, surveying, and metalworking, among other applications. You will also be able to quickly attach this Post Level to any post, pole or stringer. Package included : 2x Foldable Post Level