The diabase granite straight edges – grade 00 are reference metrological instruments designed to perform ultra-high precision dimensional inspections on flat surfaces, guideways and mechanical components. They are particularly suitable for use in inspection rooms, metrology laboratories and quality control departments, where high accuracy standards are required.

Manufactured from high-stability natural diabase granite, these straight edges provide excellent mechanical and thermal properties, ensuring consistent accuracy over time. The measuring surfaces are precision lapped, allowing accurate control of flatness, parallelism and squareness, which are essential parameters in measurement and inspection operations.

The monolithic granite structure eliminates corrosion issues, reduces wear and limits the influence of thermal variations. The low coefficient of thermal expansion allows the straight edge to maintain its geometry even under temperature changes, making it ideal for reference measurements and high-precision comparative inspections.

Diabase granite straight edges are used for checking straightness, alignment and parallelism of surfaces and components, as well as serving as reference tools for the calibration and verification of measuring instruments.

Grade 00 straight edges represent a professional solution for users who require maximum precision, dimensional stability and metrological reliability in inspection and measurement operations.