The modal shop electrodynamic modal shakers stimulate the structure under investigation with forces of 20 ... 440 N and are thus suitable for many tasks in the field of modal analysis. They are lightweight and with their compact size and the EasyTurn ™ lock can be optimally placed on the test object. In operation, interactions between the vibrator and the test structure are minimized thanks to the lightweight design. The through hole in the anchor plate of the larger shakers simplifies the assembly of the stinger between test structure and shaker. The stinger is locked to the anchor plate with the aid of a chuck so that the length protruding from the shaker corresponds to the distance to the structure. A reduction of the stinger is therefore eliminated.