CV Instruments Portable Digital Hardness Tester Rangemaster
Engineered to overcome the limitations of portable hardness testing, the CV Rangemaster delivers accuracy, flexibility, and ease of use in one compact unit. With its ergonomic design, large digital readout, and intuitive icon-based interface, operators can perform quick, repeatable tests across multiple scales. Memory storage, RS-232 output, and certified test blocks make it ideal for both industrial and research use. The simplified Rockmaster model is also available for dedicated Rockwell B and C applications.
Features
Direct readings in Vickers, Brinell, Rockwell B & C, Shore, and Tensile Strength.
Clear readout with mode icons for easy operation.
Stores over 400 readings with statistical summaries and recall.
RS-232 output for PC or serial printer integration.
Operates with 9V battery or mains adaptor, plus optional sturdy bench stand.
Overview
| Attribute | Specification |
|---|---|
| Hardness Scales | Vickers, Brinell, Rockwell B, Rockwell C, Tensile Strength, Shore Scleroscope |
| Testing Range | Vickers: 35–1000; Brinell: 100–500; Rockwell B: 30–100; Rockwell C: 20–70; Tensile Strength: 255–1999 N/mm²; Shore: 24–97 |
| Resolution | 1 unit (Vickers, Brinell, Tensile, Shore); 0.1 unit (Rockwell B, C) |
| Model Variants | Rangemaster Plus (all scales), Rockmaster C (HRC 20–70), Rockmaster B (HRB 30–100) |
| Power Supply | 9V battery or adaptor |
| Output | RS-232 serial connection |
| Operating Temp. | -5°C to +35°C |
| Memory | 400+ readings with statistical summary |
| Standard Delivery | Main unit, UKAS certified test block, case, adjusting keys, certificate, manual |
| Optional | Bench stand, printer |








