Jingstone was established in 1983. With the finest quality, we have sold our products over 50 countries around the world, and we enjoy an excellent reputation through 27 years. As the leading precision measuring company in Taiwan, we offer all kinds of measuring tools and equipments, including ***** ***** 3.Dial indicators ***** & tools ***** instruments ***** ***** master gauge. ***** measuring instruments Our products are accredited with : ***** CERT ISO 9001 *****/IEC 17025 3.Patent of Taiwan 4.Patent of Germany 5.Patent of US 6.Patent of UN All Jingstone products are made in Taiwan, processed strict Quality Control, and 100% calibrated by Jingstone Calibration Center.</p>