Digital test indicator offers you easy reading,gearless measurements in both English and Metric display without the need to read a Vernier. The Easy Glide action provides the smoothness and "feel" to make accurate measurements.Reads to 0.0005"(0.01mm)or 0.0001"(0.001mm). The measurement data can be output to an external data processor. The digital test indicator eliminates reading errors and makes it possible for even unskilled operators to measure quickly and reliably. For more details ,please visit our website