Introducing the L Square Ruler Bubble Leveler (3pc) Set by POWERTEC.These handy tools were designed to help improve your workflow by providing you with highly accurate measurements and proper alignments - eliminating much of the guesswork involved with common woodworking and other high precision task. Commonly referred to as framing squares or carpenter’s squares, this upgraded version also possesses built-in bubble levelers for proper placement and level measurements.Included Ruler Sizes:5-3/16 in. 8-3/4 in. 14-5/8 in.Each Ruler Features ? Standard and Metric Systems of measurements.? An L-shaped design to provide you with true square and straight dimensions.? Easy-to-read fluorescent colored bubble levels for optimal flatness.? Lightweight design that’s easy to maneuver and works perfectly in tight spaces.? Durable aluminum construction with an anodized finish for corrosion & rust resistance.Additional Specifications:Bubble Vial Positions: 90°Graduations: 1/16 in., 1/8 in., 1 in., 1mm, 1cmPOWERTEC is a leading manufacturer of high quality woodworking tools and accessories, machines, and an assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the latest innovations, technology, and product development to the industry.