The Keson 9in. Torpedo Level is a solid workhorse that is great for quick checks and is essential for some trades. Its V-groove and powerful magnet are features second only to the Focus-60 horizontal vial. There are also two Focus-20 vials for plumb and 45° readings.
A torpedo level is a type of spirit level that is an essential tool for any professional working in tight spaces. The body of the level is made of either metal or plastic and contains two or three tube vials. These tubes, or vials, contain yellowish-green additives and are used to determine the surface level.