Black Hawk
Granite Surface Plates
BLACKHAWK manufactures high-precision granite surface plates for dimensional inspection, calibration and quality-control applications. Made from fine-grained, non-porous black granite, they provide excellent flatness, rigidity, wear resistance and long-term stability.
Specifications
- Accuracy grades: 0 and 00
- Conforms to IS 7327:2003
- Low thermal expansion: 3–5 × 10⁻⁶/°C
- Corrosion-resistant, non-magnetic and non-conductive
- Available with a NABL-accredited calibration certificate on request
