All rotational equipment used in every field of industry and triggered by electric motors use couplings to transfer torque to each other. Thanks to laser shaft alignment devices, the axes of rotation of the equipment that provide torque transmission with coupling are measured in micron (0.001 mm) angular and parallel, precisely aligned and digitally reported. 

EXAMPLE: Motor-fan groups, motor-pump groups, motor-gearbox groups, gearboxdrum groups, etc.