The Milwaukee 4932459597 Pocket Level is a perfect alternative to bigger protractors and angle finders. It's small, yet strong for heavy duty or on site tasks. Using Sharpsite Vial Technology, the bubble is magnified so it's easy to read. The rotating Vial also allows users to set and identify any angle, the scale can also be locked with a lock screw. The Vial is coated in high-impact acrylic for long lasting durability and long term reliable accuracy. Amplified rare-earth magnets are used for a steady hold. This pocket level is excellent for professional and every day use.