一、前言历年来,橡胶制品的长度均采用机械方法测量,由于机械装置的固有局限性和使用条件等原因,造成测量结果不准确和经常损坏,影响生产。为此,天津橡胶制品三厂试制成功了CH-84_2~1型胶布自动测长仪。实践证明,该仪 I. Preface Over the years, the length of rubber products are measured by mechanical methods. Due to the inherent limitations of mechanical devices and the conditions of use, the measurement results are inaccurate and often damaged, affecting the production. To this end, Tianjin Rubber Products Factory trial success CH-84_2 ~ 1 tape automatic length measuring instrument. Practice has proved that the instrument