... (front-back)triangle board can fluctuate to knit faultlessly , system with high and low needles.(6)Neilsbed shift: Controlled by ... be conserve 4 models, and also transferable with inner card )(8)Automatic stop device: yarn-breaking,spin,needle-sever(crash),fabric ... shift amplidyne,Voltage unquiet(protected by transducer ).(9)Control system :model,step number,neilsbed shift,sari,knitting speed,piece ...