deasil

Turn on and cut function details: The table shows the turn on and cut situations as pointer moves deasil, and the function is opposite while the pointer moves widdershins.

中描述的开关功是示：仪压力指针位于最小刻度值所具有的开关功，即压力指针从最小刻度值开始顺针的开关状态，当压力指针逆针转，现的开关功相反。