Used for the test of the coarseness and eveness of coarse yarns.

lower guiding wheel wideness:   big groove :   3.17±0.013mm、
small groove :  1.58±0.01mm   
guiding wheel peripheral speed:  669.35mm/min±5%
movement weight mass :  big weigth :  1120g±5g
                        small weigth :  671g±5g
lever ratio: 1 :  100
ball mouth width :   big mouse: 3.17±0.1mm
                     small mouse :1.58±0.1mm
external dimensions: 540×290×510mm(l×w×h)
weight: 45kg
power source: ac220v   50hz   60w