一种独特简便精确的多用途计数器目前，计数器种类繁多，用途甚广，但按其结构来分也只有机械式计数器和电子计数器两种类型。前者，由于不停地运动，存在机械磨损、易损坏，且伴随机械接触而产生噪声等缺点。后者，虽工作可靠、性能稳定，但价格提高。这类计数器大都选择... A unique simple and accurate multi-purpose counter At present, a wide range of counters, use a wide range, but according to its structure is divided into mechanical counters and electronic counters are two types. The former, due to constantly moving, there are mechanical wear and tear, easy to damage, and with the mechanical noise and other shortcomings. The latter, although reliable, stable performance, but the price increase. Most of these counters choose ...