With all arrows visible, the Inner Scale, set at 6 and the indicator line aligned with Outer Scale 0; the valve setting is 6.0 And the valve is fully open.

• 如果能够看到所有箭头；则内部刻度设置在6。指示器线对齐外部刻度0;阀门设置是6.；则阀门处于全开状态。；