Specification BatteriesRequired : 1 Brand : HFBTE BulletPoint1 : Ra, Rz, Rq, Rt 4 testing parameters, suitable for more applications. It could test ex-circle, flat surface, conical surface and also test groove larger than 80*30mm; BulletPoint2 : Pocket-size & economically price.Large measuring range suitable for most materials, both metal and non-metallic surface; Using high-speed DSP processor for data processing and calculation, quick measurement and computation speed; BulletPoint3 : Liquid crystal display wide temperature using OLED display, high brightness, suitable for various occasions; The lithium ion rechargeable battery, can work for a long time, no memory effect, long battery life; BulletPoint4 : Shell used to pull aluminum mold design, durable, anti-electromagnetic interference ability significantly; Support OEM Service, Using a dedicated charger or computer USB port for charging, can work during charging, quick and convenient; BulletPoint5 : Real-time monitoring of lithium battery power and display, remind users to charge; Automatic shutdown function and low power design with long working hours, suitable for field use; Color : Blue IncludedComponents : Surface Roughness Tester ItemName : HFBTE Portable Roughness Tester Digital Surface Roughness Gauge Meter with Ra, Rz, Rq, Rt 4 Testing Parameters for Testing Most Materials Flat Surface,Conical Surface,Groove Larger Than 80 * 30mm ItemPackageDimensions_Height : 12 centimeters ItemPackageDimensions_Length : 32 centimeters ItemPackageDimensions_Width : 25 centimeters ItemTypeKeyword : surface-roughness-gauges Manufacturer : HFBTE MeasurementAccuracy : precise ModelNumber : B0DRTJQ95H NumberOfItems : 1 NumberOfLithiumIonCells : 1 PartNumber : B0DRTJQ95H ProductDescription : Surface Roughness Gauge Main Features: ◆Ra, Rz, Rq, Rt 4 testing parameters, suitable for more applications. ◆It could test ex-circle, flat surface, conical surface and also test groove larger than 80*30mm; ◆Large measuring range suitable for most materials, both metal and non-metallic surface; ◆Using high-speed DSP processor for data processing and calculation, quick measurement and computation speed; ◆Shell used to pull aluminum mold design, durable, anti-electromagnetic interference ability significantly; ◆Liquid crystal display wide temperature using OLED display, high brightness, suitable for various occasions; ◆The lithium ion rechargeable battery, can work for a long time, no memory effect, long battery life; ◆Support OEM Service, Using a dedicated charger or computer USB port for charging, can work during charging, quick and convenient; ◆Real-time monitoring of lithium battery power and display, remind users to charge; ◆Automatic shutdown function and low power design with long working hours, suitable for field use; Technical Specifications ◆4 Testing Parameters: Ra, Rz, Rq, Rt; ◆Measuring Range: Ra, Rq: 0.05~15.0μm; Rz,Rt: 0.1~50.0μm ◆Sample Length: 0.25, 0.80, 2.50mm ◆Evaluation Length: 1.25, 4.0, 5.0mm ◆Stroke Length: 6mm ◆Indication Accuracy: 0.01μm ◆Indication Error: ≤(±15)% ◆Variability: <12% ◆Stylus Static Force:≤ 0.016N ◆Force Measuring Rate of Change: ≤ 800N/m ◆Power: Rechargeable Li-battery ◆Relative Humidity: <90%; Working Temperature: -20°C~40°C ◆Size: 106mmx70mmx24mm ◆Weight of Host: 0.2kg ◆Standard Accessories: Host, Standard Calibration Block, Bracket for Calibration Block, Power Charger, Charging Cable, User Manual, Instrument Case