Vaiseshika Electron Devices manufactures Proving Rings: Series 1000. Vaiseshika Electron Devices Quality Management System is ISO 9001:2000 compliant. The extremely low uncertainty and high resolution capability of Proving Rings: Series 1000 has never been equaled by any other secondary force standard. Every Series 1000 proving ring is calibrated by primary standards with direct traceability to the United States National Institute of Standards & Technology. The Series 1000 proving ring is ideal for use in standards laboratories where the highest possible accuracy is required and direct traceability preferred.
The uncertainty of the Series 1000 proving ring is 0.0125% of capacity. This capability results from the ring design which allows greater deflection under load than other proving rings. The increased change in diameter can be measured up to 2000 major divisions on the micrometer dial. A Vernier index further improves readability to one-tenth of a major dial division and makes possible interpolation to one-twentieth of a division. To facilitate calibrations, the Series 1000 proving rings are equipped with an electric reed vibrator, a dial revolution counter, a Vernier index, a carbide micrometer and a ball seat in the top boss.
