NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for all Rockwell scales — HRC, HRB, HRA, and Superficial. ISO 6508 / ASTM E18 traceable. Accepted by IATF 16949, ISO 9001, and NADCAP auditors.
±0.5 HR
Accuracy
HRC/HRB/HRA
Scales
ISO 6508
Standard
ISO 6508
Rockwell Hardness Standard
NABL Accredited
CC-2480
— WHAT IS ROCKWELL HARDNESS TESTER CALIBRATION —
Think of a quality lab that relies on a rockwell hardness tester for daily measurements. If it has drifted even slightly from its true value, every reading becomes unreliable — leading to defective products, failed audits, or safety risks. Regular calibration is the only way to confirm your instrument is telling the truth.
Rockwell Hardness Tester calibration means comparing its readings against a NABL-traceable certified reference standard at multiple test points, recording the deviations, adjusting where possible, and issuing an NABL certificate — accepted by ISO 9001, IATF 16949, and all quality auditors.
Compare readings against a NABL-traceable reference standard across the full measurement range.
Adjust or document deviations so your instrument reads within accepted tolerance.
Issue a NABL-accredited certificate (CC-2480) with full traceability documentation.
— INSTRUMENTS COVERED —
All scales · All makes (Wilson, Mitutoyo, Zwick, Starrett, TESA) · ISO 6508 · NABL accredited
Manual Rockwell hardness testers for metallic material hardness measurement.
Digital Rockwell hardness testers with electronic display and data output.
Rockwell superficial hardness testers for thin sheets and coatings.
Rockwell reference test blocks for tester verification and calibration.
— OUR PROCESS —
Tester received and tagged. Load mechanism, indenter, anvil, and reference blocks inspected for wear and damage.
Certified NPL-traceable reference blocks used to measure as-found deviation on HRC, HRB, and required scales.
Applied loads (minor and major) verified using certified load cell. Deviations corrected per ISO 6508-2 requirements.
Depth measuring system verified against calibrated reference. Dial gauge or LVDT linearity confirmed across full stroke.
Post-correction readings on reference blocks at three hardness levels. Repeatability and reproducibility calculated.
NABL CC-2480 certificate issued with as-found/as-left data, expanded uncertainty (k=2), ISO 6508 traceability.
— STANDARDS & COMPLIANCE —
ISO 6508-1
Rockwell Hardness Test Method
ISO 6508-2
Verification of Testing Machines
ASTM E18
Rockwell Hardness of Metallic Materials
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. Rockwell hardness certificates accepted by IATF 16949, ISO 9001, NADCAP, and all major audit bodies across India.
— NON-NABL CALIBRATION —
For routine maintenance or workshops not requiring NABL certification — same engineers, same reference blocks, lower cost.
All calibrations verified using NPL-traceable Rockwell reference blocks — only certificate type differs.
Non-NABL jobs completed faster — ideal for large batches and routine maintenance schedules.
Lower cost than NABL — right for workshop testers and non-critical production equipment.
HRC, HRB, HRA, and all Superficial scales calibrated by the same specialist team.
— AREAS WE SERVICE —
Engineers carry certified reference blocks to your facility. Onsite Rockwell tester calibration with minimal downtime.
Why Choose Prism
Since 2004, every NABL hardness certificate issued by Prism has been accepted by IATF 16949, ISO 9001, NADCAP, and GPCB auditors — no rejections.
— FAQ —
Get In Touch
Tell us the tester make/model, scale, quantity, and any urgency. We respond within 2 business hours.
— FROM OUR BLOG —
Surface roughness (Ra, Rz) is a critical quality parameter in precision machining, sealing surfaces, and coating adhesion. NABL-certified roughness tester calibration ensures accurate surface texture measurements.
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Hardness testing is fundamental to material qualification in automotive, tooling, and steel industries. NABL-certified hardness tester calibration ensures traceable, accurate hardness values.
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Gujarat's steel and fabrication sector — from mini steel mills to pressure vessel manufacturers — requires NABL-certified calibration for BIS material testing, ISO 9001, and structural safety compliance.
Read MoreNABL Accreditation Disclaimer
Calibration services are provided under NABL Certificate CC-2480 in strict accordance with our officially approved scope of accreditation (ISO/IEC 17025:2017). Parameters or onsite conditions falling outside our active NABL scope are processed with standard metrological traceability to NPL/BIPM national standards.