If seen the shape of all types of calipers is almost similar there are only a few differences, for example in the digital type calipers the difference is only in the nonius scale which is replaced by an electronic module that has a monitor screen display. In its use digital calipers are also very easy and do not require special skills, only need to pay attention to certain things so as not to interfere with the measurement process. Before using the calipers there are several things that must be considered, namely: The sliding jaw must be able to slide on the measuring rod properly. Make sure to press the ON / Zero button when the two jaws stick. Objects to be measured as much as possible should not be measured just by using the tip of the measuring jaw try to get a little inside. Measuring pressure is not too strong but only as needed. Make sure the cleanliness of the surface of the object to be measured. After making sure the numbers on the display screen show the number 0 and the two jaws in the attached position. We can direct the sliding length to the object we are measuring, the display monitor will display the measurement results.