... model is high speed double twisting machine with inner pay-off and outer take up,double flywheel rings , suitable ... mm away from ground and machine body,85dp Machine vibrationTorsion shaft vibration when machine start,operate,reduce less than ... ,2+1,Meter-measure error ≤0.15% (double meter-measure function) Lay length error Less than ... , applicable for WS50/WS44 spool SOF2 Double Twist Bunching Machine