d518 型纱线多功能测长仪 hd518 yarn multi-functional measuring instrument 用途：主要用于小宝塔线的定长和测长。 usage: it is mainly used in the length fixing measuring of small cotton sewing thread on cone. 主要功能 main functions: 1. 双线管可同时或分别进行测长。 the double-spool can be measured simultaneously respectively. 2.管线可同时或分别用作分线功能并方便地将大宝塔线分成小宝塔线。the souble-spool can simultaneously respectively be used for distributing functions,it is convenient to turn the large cotton sewing thread on cone into small cotton sewing thread on cone. 3.断线自动停机.breaking automatic stop. 主要技术参数main technical parameters:测长范围 measuring range 0-9999m(yd) 转速度 speed 1440r/min 电源 power ac220v 50hz 120w