ball float meter 浮球仪

cone-and-float meter 锥体浮子式流量计

Verification Regulation of Float Meter 浮子流量计检定规程

float type flow meter 浮子式流量计 ; 浮式流速仪

float level meter 浮子液位计

cone and float meter 锥形浮子式流量计

float ball level meter 浮球液面计

float type level meter 浮子式水位计

Remote measuring float level meter 浮标式遥控测液位计