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YG381A型用于搖取棉、化纖紗線。按GB/T9996標(biāo)準(zhǔn)檢查紗線外觀評級，還可按GB/T403-78標(biāo)準(zhǔn)進(jìn)行測試。
YG381M型用于搖取毛、麻紗線。按FZ/T20017標(biāo)準(zhǔn)檢查毛紗外觀評級。
Model YG381A is used for winding and taking cotton yarn or chemical fiber yarn. Check the appearance of yarn and appraise its grade in accordance with GB/T9996 and can also test in accordance with GB/T403-78.
Model 381M is used for winding and taking wool yarn or hemp yarn. Check the appearance of yarn and appraise its grade in accordance with FZ/T20017.

主要技術(shù)參數(shù)：Main Technical Data：
1、黑板機(jī)規(guī)格 Sizes of black board
YG381A:250*180*2mm
YG381M:300*225*5mm
2、搖紗密度 Density of rocked yarn：
YG381A:7、9、11、13、15、19根pieces/10mm
YG381M:35、45、55根pieces/10cm
3、外形尺寸 Outline size：
YG381A:L630*W430*H400mm
　YG381M:L600*W420*H400mm