Abstract: A device for tensioning and angularly adjusting a printing plate mount (4) on a rotary printing cylinder (5) having a duct (11), which is formed in the longitudinal direction (9) of the printing cylinder and in the outer surface thereof and in which the device is mounted. The device comprises a base plate (38) on which a pair of fastening profiles (6, 7) for holding the printing plate mount (4) are movably arranged, a pair of guide pins (14) engaging a pair of shoulders (15) for angularly adjusting one fastening profile (6) when moving the guide pins (14) or the shoulders (15) in the longitudinal direction (9) of the printing cylinder (5). The two fastening profiles (6, 7) are connected to one another through a linkage (19), which converts the angular adjustment of one fastening profile (6) to a longitudinal displacement of the other fastening profile (7).