Two-In-One Digital ProtractorIt Can Not Only Measure The Length, But Also Measure The Angle At; 360&Deg; (I.E. Internal Angle, External Angle). With The Practical Lock Button, The Protractor Can Be Locked In Any Position.[Good Material] The Material Is A Super Strong Nylon Fiberglass Construction Material, Which Has Good Stiffness, Good Resistance To Wear, Not Easily Deformed, And Not Scratch Your Hands. It Is A Good Choice For Carpenters And Plumbers.[Length And Angle Measurement Range] Measurement Length: 300 Mm; Angle Measurement Range: 000.0&Deg;999.9&Deg; ; Precise; 0.5&Deg; ; Resolution: 0.05&Deg;/3'; Professionally Measures Internal And External Angles And Angles Of Objects.[With Lcd Display] High-Definition Lcd Display With Electronic Digital Display Automatically Shuts Off For 5 Minutes And You Can Switch Between Degrees And Minutes By Pressing "D/M" Key.[Hold Zero Adjustment Function] "Hold" Key Can Save Data During The Measurement And The "On/Off/Zero" Key Can Be Pressed Briefly To Store Data At Any Time. Any Time. Which AngleProduct DescriptionAutoutlet Digital Angle Protractor With 0-300Mm Lcd Display, 2 In 1, Reset Function, Degree Change And Lock, 0-360&Deg;Free Adjustment At 360&Deg;ÉMetric (Mm) And Imperial (Inch) ScalesAngle Measurement Range: 0-360&Deg;Length Measurement Range: 0-200Mm With Digital Display And Locking ButtonDigital Display - The Clear Display Allows You To Read The Measured Value Quickly And Easily.Durable Material: Made Of Made Of Carbon Fiber + Abs Material, It Has Excellent Functionality. And Durability.Use The Lock Knob: Turn The Lock Knob Clockwise To Tighten The Ruler. Turn The Lock Knob Counterclockwise To Release The Ruler.Hold And Reset FunctionOn/Off Key: Short Press The On/Off Key To Reset.Hold Button: You Can Hold The Angle At Any Time. At Any Time.D/M Button: Degree/Minute Change Button.Read MoreRead MoreWide Range Of ApplicationsSuitable For Length Measurement, Angle And Line Drawing, External Angle Measurement And Internal Angle Measurement.Suitable For Hospitals, Woodworking, Building Materials, School Teaching Aids, Student Stationery/Mechanical Processing Etc.It Can Professionally Measure Internal And External Angles And Angles Of Objects.It Can Be Easily Locked To Any Angle To Get A Compact And Accurate Measurement.It Will Turn Off Automatically After 5 Minutes.Key Functions: Open/Key, Clear Key , Data Hold Key, &Deg;/Minute Switch KeyRead MoreSpecification:Material: Carbon Fiber + AbsLength: 0-200Mm (8 Inch)Width: 35Mm/1.38 InchMeasuring Range: 0-360&Deg;Resolution: 0.05&Deg; Accuracy: &Plusmn;0.05&Deg;Working Power: 3VBattery Model: Cr2032Availability : 5,000 HoursOperating Temperature: 0&Deg;C-+50&Deg;C Humidity: 5000 Hours Operating Time: &Le;85%Screen Auto-Off Time: 5 Minutes Purpose: Angle And Length MeasurementContents:1 * Digital Protractor ;RiqueRead More