Stabila 29824 Pro Kit: 10" torpedo level & 24"/48" Type 80A-2 levels for general construction. Strong rectangular aluminum profile with reinforcing ribs, suitable for overhead (vial down) measurement - also includes removable end caps. General purpose set of levels, good for a variety of applications. Accurate, lightweight and fast. Designed for tile installers and all jobsite applications, featuring easy cleaning and absolutely waterproof design. Big, clear, easy to read top mounted horizontal vial. Certified accuracy in top read position: 1/32" over 72". Spirit levels feature one Horizontal (level) and two Vertical (plumb) vials.