主要特点
•加长爪形能重叠，可伸入较深的孔中测量阶梯孔孔径；
•读数清晰、直观
•刻度盘位置可调整，并借助锁紧螺钉紧固
FEATURES
•Overlapping long jaws used for narrow inside diameter measurement in deep bores
•Easy to read clearly
•The adjustable dial face can be fastened by a clamping screw
主要特点
•加长爪形能重叠，可伸入较深的孔中测量阶梯孔孔径；
•读数清晰、直观
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