1)indicator/stopper,指示器/限位器2)load-limit position indicator,限载位置指示器3)limit indicator,限幅指示器，极限指示器4)ceiling height indicator,升限指示器5)resulting indicator,限制指示器6)valve position indicator,阀位指示器
用法例句
：This article brief disscuss the primary structure and working principle of the valve position indicator in the immersion type hydraulic driving butterfly valve，and introduced the correct adjustive method of the valve position indicator.
