Hardness scale HL, HRC, HRB, HRA, HV, HB, HS Memory 510 file,47 ~ 341 groups (Impact times:32 ~ 1) per file Measuring range HLD(170 ~ 960), HRA(59 ~ 85), HRB(13 ~ 100), HRC(20 ~ 68), HB(19 ~ 651), HV(80 ~ 967), HS(30 ~ 100) Tensile strength U.T.S. range 374 ~ 2652 MPa Accuracy ±6HLD (760±30HLD) error of displayed value 6HLD (760±30HLD) repeatability of displayed value Standard Impact Device D Data Interface USB 2.0, Bluetooth Optional Impact Devices DC / D+15 / G / C / DL Max. Workpiece Hardness 996HV(For Impact Devices D / DC / DL / D+15 / C) 646HB(For Impact Device G) Min. Radius of Workpiece (convex/concave) Rmin = 50mm (with special support ring Rmin = 10mm ) Min. Workpiece weight 2 ~ 5kg on stable support 0.05 ~ 2kg with compact coupling Min. Workpiece thickness 5mm (Impact Devices D/DC/DL/D+15) 1mm (Impact Device C) 10mm (Impact Device G) Min. thickness of hardened layers 0.8mm Power Rechargeable Li Battery, 3.7V, Li(2000mAh) Continuous Working time About 30h Charging time 4 ~ 5 hours Operating temperature 0 ~ 40ºC Humidity ≤ 90% Overall dimensions 212 × 80 × 35 mm Weight 320g Standard delivery Main unit Impact Device type D Test block HLD Charger Brush Table support for main unit Connecting cable Company certificate Instruction manual Dataview Software Optional accessories Optional impact devices Optional support rings Other test blocks Micro Printer