Designed for industrial metrology and CMM calibration, our Precision Granite Triangular Square (90° Inspection Ruler) provides reliable perpendicularity checks across planes. Crafted from natural black granite, it offers high geometric stability and zero internal stress.
- Superior Material Performance: Made of natural hard stone; 100% rust-free, non-magnetic, and acid-resistant.
- Ergonomic Relief Bores: Features weight-reducing holes that ease handling without sacrificing structural rigidity.
- Ultra-High Accuracy: Edges are lapped and ground to DIN 875 / DIN 876 Grade 00/000 tolerances.
- Thermal Stability: Low coefficient of thermal expansion ensures precision during temperature shifts.
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Why Buy From MQS?
Over 40 years supplying precision measuring equipment throughout the UK and Ireland.
Expert Advice
Experienced engineers helping you select the correct measuring solution.
UKAS Calibration
Full UKAS accredited calibration laboratory with nationwide support.
Installation & Training
Installation, commissioning and operator training available.
After Sales Support
Technical support, servicing, repairs and ongoing customer care.