海德汉系列长度计超高精度用于检测测量设备和量块常用型号：CT2501CT2502CT6001CT6002MT1201MT1271MT1281MT2501MT2571MT2581MT1287MT2587MT60MMT60KMT101MMT101KST1208ST1278ST1288ST3008ST3078ST3088ST1207ST1277ST1287ST3007ST3077ST3087)