The brochure contains the scope, norms and methods of testing oil circuit breakers and their drives, recommendations for adjustment and adjustment of manual, spring and electromagnetic drives, as well as control equipment elements. The procedure of adjustment of oil circuit breaker control circuits is described. Data on equipment and instruments required during adjustment are given. The first edition was published in 1969. The brochure is designed for electricians, craftsmen and technicians involved in the installation, adjustment and operation of oil switches and drives for them.