Swanson Wood Magnet T04424
Swanson Wood Magnet - Post Level and More!  Compress fits on to any 2X material; 2x4, 2x6, 2x8 etc.  Use with 4x4 Posts and Pipes up to 4" in diameter.  Levels studs and joists.  Will NOT fall off any leveling material.  Use on a long stud for a quick 8ft level, or more!  Has ABS hi-impact body, cushioned rubber grip, and three easy-to-read vials.