IRWIN Level, Extendable, 5-13 ft, 10 Inch (1801107)

Locking rails that are extendable Durability is ensured by the use of heavy-duty aluminum construction. The three-rail I-beam design is ideal for plate leveling. For life, it is guaranteed to be accurate to.058°. Made in the U.S.A Product Dimensions (cm): 3.50 x 20.32 x 152.40   Three heavy-duty aluminum I-beam rails support the IRWIN Extendable Level. The three-rail design is ideal for plate leveling and is guaranteed to be accurate to 0.58° for life. Made in the USA.