The reference book systematizes the guiding and most used reference materials in accordance with state standards and CMEA standards for the main elements of design and design documentation. Methodological guidelines and translation tables are given. The units of the International System are given; tolerances and fits of EDMS CMEA; basic standards of interchangeability of CMEA; elements of parts, connections, gears and mechanisms; basic terminology; data on ferrous and non-ferrous metals, plastics; rules for execution of EDMS EDMS drawings. The reference book is intended for engineers and design technicians, technologists and foremen of all branches of mechanical engineering.