200 By 150 By 40 Millimeter Precision Granite Comparator Base Pro Grade Rock Solid Stability For Digital Indicators And Calibration Tasks Durable Granite Surface With Ultra High Flatness And Long Lasting Accuracy
✔️ 200x150x40mm granite base; flatness 0.003mm; DIN876-00
This precision granite comparator base delivers rock-solid stability and ultra-flat surfaces for calibrating digital indicators, dial gauges, and calibration tasks in metrology labs and workshops. Made from natural black granite, it minimizes magnetic interference and preserves measurement accuracy over time.
✅ Ultra-high flatness to 0.003 mm, DIN876-00 compliant
✅ Base size 200x150x40 mm; natural black granite; density ~3300 kg/m³
✅ High stiffness and elastic modulus for long-term accuracy
✅ Non-magnetic and radiation-free to avoid interference with precision instruments
✅ Smooth edges, deburred corners, and chamfered surfaces for safe handling
✅ Mechanical strength: compressive 256-258 MPa; flexural 25.2 MPa; water absorption 0.02%
💡 What is a granite comparator base used for in precision metrology and calibration tasks?
Granite bases provide a stable, non-magnetic reference surface for precise measurement and alignment work.
- Improves calibration accuracy by providing a flat, stable plane for indicators and gauges - Minimizes thermal drift during long measurement sessions - Non-magnetic and radiation-free to avoid interference with sensitive instruments - Handy for bench setups, height checks, and metrology lab tasks