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.
