The Natural Frequency Tester is used to identify the active frequencies of any structure. This equipment is particularly useful for structural testing of bridges and other structures in earthquake affected regions. Using this equipment, a building’s or structure’s design can be simulated depending on the natural frequencies found at the design stage, in cases where the natural frequencies coincide with potential seismic frequencies. This equipment allows all multiple frequencies to be used to excite a model structure and facilities the online measurement and storage of all results of the impact of the structure under such dynamic seismic like loading. The equipment consists of a Dynamic Signal Source, Power Amplifier, Exciter & Sensors along with a Data Acquisition System.