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.

表中描述的开关功能是表示：仪表针位于小刻度所具有的开关功能，即针从小刻度开始顺针动的开关状态，当针逆针转动，实现的开关功能相反。