FIELD: physics; clocks.
SUBSTANCE: invention relates to the clock making industry. Technical outcome is achieved due to that, the body of the mark has the shape of steel balls or/and rollers and the base is formed by inner and outer rings or bushings or holders which are coaxially placed relative each other, forming a coaxial cavity and a guide track. The inner and outer rings or bushings or holders are immovably fastened together using balls or/and rollers, which are put into the coaxial cavity and on the guide track, and fitted with possibility of rotation about each other and about the balls and/or rollers. The latter are held together in a given position, corresponding to the position of bodies of the marks about a geometric centre, using a fixing lug with possibility of rotation about the fixing lug, outer or/and inner ring or/and bushings or/and holders, as well as with possibility of sliding or/and rolling along the guide track. 3 to 60 steel balls or/and rollers are used.
EFFECT: wider assortment of equipment.
2 dwg
