Residual quantity icon, prompting the user to charge; RELATED OPTIONAL ITEMS KS100 - Small Hole Sensor KS100 - Small Hole Sensor, measures flat surface, shaft ; when measure inner hole surface, the diameter of inner hole are required>5mm, depth>22mm. Bracket for Calibration Block Adjustable Support Power Charger USB Cable PC Software User manual Instrument case 1. Surface Roughness Gauge is suitable for production site, it can measure Rpk, Ra, Rz... 22 roughness parameters. 2.Measures variety of surface roughness of machined parts, according to the measurement conditions and the corresponding parameters of selected, shows clearly the measurement results and graphics in liquid crystal screen , and can output on a printer, can also communication with PC. 3.It is especially suitable for field inspection of large workpieces and production lines, as well as outside verification of inspection, measurement and commodity inspection departments. 4.The roughness measuring head uses high precision inductance sensor, and the measurement value is stable and accurate. 5.The curved surface sensor can be selected to measure the roughness of concave and convex surfaces, and the inner hole roughness can be measured by the small hole sensor. SRRBR255 M10 x 1.0 Bubble Flare Nut (Ford) Brand Features of Digital Surface Roughness Tester KR220 1.  Using DSP chip to control and data processing, high speed, low power consumption. 2. Storage: up to100 groups data and waves 3. Real-time clock settings and display, convenient data recording and storage. 4. With automatic sleep, automatic shutdown power-saving features. 5 SUNNYSONG 22 Parameters Handheld Digital Surface Roughness Tester Meter Kr220 Portable Profilometer With Real Time Clock Ra Rz Range And Display For Accurate Surface Measurement Compatible with ISO, DIN, ANSI, JIS national standards; KS110 - Curved Surface Sensor KS110 - Curved Surface Sensor, to measure smooth cylindrical surface which radius is larger than 3mm, for the large radius smooth spherical surface and other surface also can obtain good approximation, need to work with platform KA520 or KA620.KS120 -very small hole Sensor, KS120 -very small hole Sensor, to measure the inner surfaces of holes with radius more than 2mm, better to work with platform KA520 or KA620.KS131 - Deep Groove Sensor KS131 - Deep Groove Sensor, measure groove with width wider than 3mm and depth deeper than 10mm, or the surface roughness of step with height less than 10mm, also can used to measure the planar, cylindrical used with platform,better to work with platform KA520 or KA620.STANDARD DELIVERY KR220 Host Standard Sensor KS100 Standard Calibration Block Digital Manometer Portable Handheld Digital Surface Roughness Tester On Sale - Buy Inductance Meter With automatic dormancy, automatic shutdown and power saving function; Optional different sensor, measuring platform, mini printer, extension rod and other accessories; Intuitive and rich display information, can display all the parameters and graphics; 128 x 64 OLED dot matrix display, digital / graphic display; highlight no perspective; Real-time clock settings and display, convenient data recording and storage;