A Proving Ring is a precision instrument used to measure compressive and tensile forces in laboratory and field testing. It consists of a high-strength elastic steel ring of known diameter, with a dial gauge or displacement transducer mounted at its center. When a load is applied, the ring deflects proportionally, and the deflection is read on the dial gauge to calculate the applied force using a calibration constant.

Applications:

• Calibration of load-measuring instruments and testing machines
• Soil testing — unconfined compression, triaxial, and CBR tests
• Compression and tensile load measurement in civil and geotechnical engineering labs
• Quality control and verification in construction material testing

Features:

• Available in a wide range of capacities: 1KN, 2KN, 2.5KN, 5KN, 10KN, 20KN, 30KN, 50KN, 100KN, 500KN, 2000KN, and 25KN
• High-precision dial gauge for accurate force reading
• Robust alloy steel construction for durability and long service life
• Each ring supplied with individual calibration certificate
• Suitable for both compression and tension measurements

Standards: Designed and manufactured in accordance with relevant IS/ASTM standards for force-measuring devices used in soil testing.