不锈钢制造
     圆弧形内测量面适合于精确地内测量
     带微调装置
     长量爪用于测量通常情况难以达到的位置

     测量范围:外测量：0-200          内测量：10-200

                              0-250                       10-250

                              0-300                       10-300  20-300 

                              0-400                       20-400

                              0-500                       20-500

                              0-600                       20-600

                              0-800                       20-800

                              0-1000                     20-1000

                              0-1500                     20-1500

                              0-2000                     20-2000

                              0-2500                     20-2500

                              0-3000                     20-3000