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创造者:1955年北镇县国营苗圃根据开原县苗圃创造的工具改进制成的。构造:在木滚上,按苗木行间距离钉上长5或10公分左右的铁丝或自行车废车条.然后用角形铁板将滚与木把连结起来。滚的直径为8.5公分。
Creator: In 1955, Beizhen County state-run nursery was made according to the improvement of tools created in Kaiyuan nursery. Structure: On wood roll, peg according to the distance between the rows of nails 5 or 10 centimeters long wire or bicycle scrap bar and then use angle iron will roll and wooden link. The diameter of the roll is 8.5 cm.