How does System Leitech works What our Gauge (Hi-resolution) does and how it works ? This can be seen in the animation below. (8 sec. Aprox). The gauge is screwed in the thread hole and inmediately you can read the depth on the large scale (X) in mm (14mm), and on the internal scale in 1/10 mm (2/10 mm).

The result is a depth of 14,2mm - accurate, quick and simple.