The Demeq QH Series hardness gauges provide a fast and convenient method for measuring the hardness of metals, making them an excellent complement to traditional bench-mounted hardness testers. Designed for portability and ease of use, they enable hardness testing to be performed directly on components, structures, and finished products.
Measurements are displayed in Leeb and Vickers hardness scales (depending on the measurement method selected), with instant conversion to other commonly used hardness units including Rockwell and Brinell. This flexibility allows users to quickly compare and interpret results across different hardness standards.
All QH Series models feature built-in memory for storing measurement data, which can be easily transferred to a PC for analysis, reporting, and record keeping.
Typical Applications
- Hardness testing of metal components and assemblies
- Manufacturing and production quality control
- Inspection of machined and heat-treated parts
- Maintenance and field service inspections
- Verification of material properties on large or installed equipment
- Incoming material inspection
- Metal fabrication and engineering applications
Key Features
- Portable and easy-to-use hardness tester
- Fast hardness measurement of metals
- Measures in Leeb and Vickers scales
- Instant conversion to Rockwell and Brinell hardness units
- Built-in memory for storing measurements
- Simple data transfer to PC
- Ideal for workshop, laboratory, and field applications
- Complements traditional bench hardness testers
Typical Applications of the Demeq QH Series Portable Hardness Testers
The Demeq QH Series is designed for fast, portable hardness testing of metal components, making it ideal for situations where traditional bench hardness testers are impractical or where testing must be performed directly on the part.
Manufacturing & Quality Control
Used to verify the hardness of components during production and final inspection, helping to ensure products meet specified material and quality requirements.
Heat Treatment Verification
Commonly used to check the effectiveness of heat treatment processes on metals, including:
- Hardened steels
- Gears
- Shafts
- Tools and dies
- Forged components
Field Inspection & Maintenance
Portable design allows hardness testing to be carried out directly on:
- Large machinery
- Pressure vessels
- Pipelines
- Structural steelwork
- Installed equipment
Metal Fabrication & Engineering
Ideal for checking material hardness during fabrication and assembly processes to ensure compliance with project specifications.
Incoming Material Inspection
Used to verify the hardness of raw materials and purchased components before they enter production.
Mining, Oil & Gas, and Heavy Industry
Suitable for testing wear-resistant and high-strength components in demanding industrial environments, helping monitor material condition and performance.
Research & Development
Useful for:
- Material comparison studies
- New alloy development
- Product validation
- Failure analysis investigations
Key Benefits
- Fast, non-destructive hardness testing
- Portable for field and workshop use
- Suitable for large or installed components
- Multiple hardness scale conversions (Leeb, Vickers, Rockwell, Brinell)
- Data storage and transfer to PC for reporting and traceability
Choose S.I. Instruments for precision you can trust, compliance you can rely on, and service that delivers confidence.



