Fits all Medio-Line spring scales. The drag pointer is a plastic ring, new with well gliding Teflon components. The drag pointer easily clicks over the aluminium scale tube. Before measuring move the drag pointer towards the zero position. With increasing load the drag pointer moves down and stops at the maximum load per measurement. Suitable for rupture tests up to 1000 g. (The fine Micro-Line spring scales are not designed for use with drag pointers as possible friction might influence the reading).