Authors developed the mechanism which gives real vibration to electrical contacts by hammering oscillation in the vertical direction similar to real cases and studied the influences of micro-oscillating on contacts.It is shown that the performance to measure acceleration and force by Hammering Oscillating Mechanism (HOM) is more outstanding concerning both of the stability and the distribution of data than the other method.In addition, it is proved to be more effective to use the rectangular waveform caused by HOM for an input waveform to evaluate the properties of the objective systems.It is indicated that not only acceleration but also force or mass by the method are estimated.