The spring balance becomes very popular because of its simple operation as well as its independence from place where it is used. Tublike DynamometerModel No. XY-703NMax Capacity:10N-50N,100N,200N,300N,500N,1000N We also product dial spring scale, table scale,electronic scale,height scale, waterproof scale,platform scale,printing scale,health scale,postal scale, jewellery scale, pump,ladders etc. ...