Product synopsis Model: HM-6561 Typical Applications Die cavity of molds Inspection of bearing and other mass produced parts on a production line Failure analysis of pressure vessel, steam generator and other equipment Inspection of installed machinery, permanent parts of assembled systems and heavy work pieces. Testing surface of a small hollow space Material identification in the warehouse of metallic materials Rapid testing in large range and multi-measuring areas for large-scale work piece Testing Features Palm size for narrow space. Test at any angle, even upside down. Direct display of hardness scales HRB, HRC, HV, HB, HS, HL. Large memory could store 250 groups including single measured value, impact direction, material and hardness scale etc. User recalibration function allowed. Can communicate with PC computer for statistics and printing by the optional cable. Manual or automatic shut down. Low battery indication. Technical Specifications Display: 12.5mm LCD with back light Accuracy: Display error í+0.8% at LD=900 Measuring range: 200-900L Conversion: HL-HRC-HRB-HB-HV-HSD Materials: 9 different common materials With RS232C interface Memory: 250 data can be stored and re-readable Impact device: D Will handle the majority of hardness testing applications. Weight: 75g Power supply: 2x1.5V AAA size battery Working temperatureú¦ - 10íµí½ú½50íµ Storage temperatureú¦- 30íµí½ú½60íµ; Relative humidity: í_90úÑ Dimension: 146í-65í-36mm Weight: 130g (not including batteries)