近年来,机械式游标卡尺由于结构不够完善,精度和测量准确度较差,以及人为的读数误差,不能直读等,因而发展了表式卡尺。表式卡尺具备形式新颖、快速、直读等优点,它是用百分表的指针读数值取代个位以下的两位小数,测量精度达0.02毫米。 In recent years, mechanical calipers due to the structure is not perfect, accuracy and measurement accuracy is poor, as well as human error readings, can not direct reading, etc., which developed the calipers. Table calipers with the form of new, fast, direct reading, etc., it is the pointer readings with dial indicator to replace the following two decimal places, the measurement accuracy of 0.02 mm.