Features:  1. Aluminum enclosure.  2. Measuring range 0-90°*4.  3. Three function key.  4. With data hold function.  5. Zero-setting at any position.  6. Quick display of the measured value on big LCD screen.  7. With on-off power switch & Auto power-off for option.  8. With magnets inside to attach to the measured iron object conveniently.  9. Works great for mite saws and table saws.  10. Portable size ,convenient to co-work with other measuring tools and enlarge measuring range.  11. Used for angle measurement in automotive, woodwork, building, drilling machinery etc.     Specifications:  Measuring range: 4*90°. Resolution: 0.01°.  Error value: ±0.02°.  Battery: AAA*2 battery (Not included).  Working temperature: -12°C ~ 42°C. IP54 waterproof is available: YES.     Package included:  1 x Digital Protractor Inclinometer Level Box(Battery not included)