Proving rings are calibrated according to ASTM E 74 – 95 standards for verifying force indications in testing machines, enabling scientists to test material strengths by applying calculated forces. The document also mentions calibration services for various mechanical instruments, including vernier calipers and lux meters. Contact details for Sigma Test & Research Centre are provided for further assistance.

1. Proving Ring Calibration

2. About
Proving Ring Calibration
• Proving rings are calibrated in accordance with procedures
established by the American Society for Testing and Materials in a
standard designated as ASTM E 74 – 95 entitled “Standard Practice
of Calibration of Force-Measuring Instruments for Verifying the
Force Indication of Testing Machines.
• Proving rings are often used to calibrate the amount of force used
within various force-testing devices. Once the calibration is set,
other materials are placed in the devices, and it is possible to see if
they can withstand the same force that was being applied to the
proving ring. In this way, scientists can determine the exact
strengths of various materials.

3. • When it comes to mechanical instruments calibration then Vernier
Caliper, Proving Ring, Lux Meter Calibration is just a call away. Sigma
mechanical instrument range is beyond the limit.
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DIMENSION:
VERNIER CALIPER
HEIGHT GAUGE
MICRO-METER
STEEL-SCALE
TEST SIEVE

4. Sigma Test & Research Centre
Address: BA-15, Mangolpuri Industrial Area PhaseII Delhi-110034(India)
Ph No: +91-11-49491414/15
Fax: +91-11-4385 2040
Email: info@sigmatest.org
Email: rahul@sigmatest.org
Website: www.sigmatest.org
Contact person: Mr. Rahul Gupta
Mobile: +91- 9811565000