Dial calipers can be used to measure outside, steps, inside and depth. When reading a Dial Caliper, it is important to remember that they are read similar to Vernier Calipers. First read the largest numbers on the main scale then the smaller .100” graduations on the beam and last, you will read the dial. Add the values per reading to get the sum of measurement. Dial Calipers are great for quick measurements. However, they lack precision because the operator can manipulate the reading with more pressure. Dial Calipers are only accurate within .002” to .005”. On the other hand, Digital Calipers displays measurements in digital format and therefore, requires no additional measurement reading.