技术参数：
质量允许误差： ±0.05％
滚轮间距： 200mm
检验链码长度： 3200-7400mm
规格：
10kg/m
       PLM-DH-10
18-25kg/m
       PLM-DH-18
       PLM-DH-20
       PLM-DH-22.5
       PLM-DH-25
28-36kg/m
       PLM-DH-28
       PLM-DH-32
       PLM-DH-36
40-63kg/m
       PLM-DH-40
       PLM-DH-45
       PLM-DH-50
       PLM-DH-56
       PLM-DH-63
70-90kg/m
       PLM-DH-70
       PLM-DH-80
       PLM-DH-90
100-140kg/m
       PLM-DH-100
       PLM-DH-110
       PLM-DH-120
       PLM-DH-140