Knife sharpener 360 Degree Mini Digital Protractor Electronic Level Box Magnetic Base Measuring Tools

Features: ABS Plastic enclosure (light weight and durable) Relative / absolute measurement interchange at any position Angle and slope readout conversion With built-in magnets in measuring surface which is convenient to be attached to the object measuring workpiece Power-off automatically in 5 minutes Portable size convenient to co-work with other measuring tools and enlarge measuring range battery not included