The extraction tester DYNA is a light, precise portable instrument used for measuring the anchor bolts, bolts and plugs on site or in laboratory. With the increase of the pressure in the hydraulic system, the desired charge will be carried over the pull rod precisely and in a controlled manner on the test specimen. DYNA S with digital display. DYNA SE with DYNAMETER display; the electronic option with a load pacer for a controlled charge increase and to measure the force and tension. DYNA FS, same as Type SE, however with an additional measuring displacement to register the drift. With additional Software a transfer on-line is possible (force/displacement and force/time diagram). The data of types SE and FS can be transferred to a PC or a printer.