90.光栅角位移测量系统Grating angular displacement measuring system
91.磁栅线位移测量系统Magnet-grid linear displacement measuring system
92.量块附件Accessories for gauge blocks
93.V形架Vee blocks
94.比较仪座Comparator stand
95.磁性表座Magnetic stand
96.万能表座Universal stand for dial indicator
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