Standard Pack = 1 piece(s). Type = Portable Surface Roughness Tester ; Drive Unit = Transverse Tracing Type ; Detector = 4 MN Type ; Display Unit = Compact Type ; Stylus Tip Radius = 5 Micro Meter ; Detector Measuring Force = 4 MN ; Features = The Surftest SJ-210 Can Be Operated Easily Using The Buttons On The Front Of The Unit And Under The Sliding Cover/ The Display Interface Supports 16 Languages, Which Can Be Freely Switched/ An Alarm Warns You When The Cumulative Measurement Distance Exceeds A Preset Limit ;