• Measuring Range (Degrees): 360 • Resolution (Degrees): 0.1 • Base Style: Magnetic Features • This protractor provides an immediate digital reading of any angle in a full circle with 0º-90º-0º-90º-0º readings. The machined aluminum frame is rigid and light with a precise platform that allows the sensor and its microprocessor circuit to provide high accuracy throughout the entire 360º range • Four 90º quadrants for display purposes • Calibrates in minutes without any special fixtures • HOLD button for freezing a reading in an unreadable position • ABS/ZERO button allows 2 measuring modes, Standard and Alternate Reference. • V-grooves on top and bottom for use on curved surfaces • Angle displayed upright regardless of protractor position