I need a caliper, which I also can read without glasses for emergency times. This makes the really good here. As always, but you have to take with these digital un purchase that differ by degree of a millimeter. This also means that three or four measurement operations as well provide many different results. For me, the less plays a role, because I can not work as precise anyway - and who needs it more precisely, the buys something really expensive one. Is somewhat strange that one at the start of measurement actually never has a null value and needs to always put first. Then all it takes is a touch of the caliper - to see a value of 0 - without moving the slider. Well, who does not need to exactly: This one is the choice!