Optical and optoelectronic angle meters are described, allowing to automate the measurement process and increase their accuracy. The method of calculation of polarization properties of optical systems with arbitrary orientation of elements in space is given. Disclosed are properties of optical media with respect to polarised radiation. Particular attention is paid to the description of the elements of blocks and polarizing angle meters made of isotropic and anisotropic materials. For engineers involved in the operation, manufacture and development of measuring equipment.