Profile: Hebei Jinggong Measuring Tools Producing Co. Ltd. is specializing in manufacturing and exporting of measuring tools & apparatus. Our products have the features of reasonable design, stable structure, high precision, good abrasion resistant and long service life. We use HT200-250 high hardness casting iron as the material. The hardness of surface plate is HB160-210, the hardness of flat ruler and other products is HB170-240. These measuring tools are widely used in mechanical processing, testing, measuring and grinding of precision finishing, adopted by tools workshop, assembling workshop, testing and repairing workshop and measuring room.