I use this caliper to measure beads, rhinestones, etc. to measure in jewelry. I try to zero it before every measurement. I got different readings for smaller beads and rhinestones so you need to be precise with the position of the clips or the readings will be inaccurate. The display is big enough for me and easy to see. Considering the price, this is good value for money and I was relatively happy with this tool. The only problem was different readings of the same object, but this may be due to user error.