A Red indicator hand that HOLDSat the highest reading registered, to record shock pressure or when left on overnight will register the highest surge pressure which occurred during that period.
A Red indicator hand that HOLDSat the highest reading registered, to record shock pressure or when left on overnight will register the highest surge pressure which occurred during that period.
配置红色指针，可以“保持”在最高读数上，用于记录冲击压力或留着过夜以记录前一个晚上出现的最高冲击压力。