Preparation before use, loosen the locking screw and move the slider to determine whether the latest genius gate work and interact correctly. Before measuring, make sure the caliper, reading 0.
Preparation before the measure to loosen the locking screw and move the slider to determine if the vernier scales work correctly. Before measuring, make sure the caliper reads 0.
Preparation before using the measure to loosen locking screw and move the slider to determine whether the driver Aeneas gale is working correctly. Before the measure to make sure caliper reading 0.