when two dissimilar metals are connected with different temperature in each end of the joints, an electrical is induced by the flow of excited electrons from the joint to the cold joint. the ratio of the induced potential to the difference in temperature of between both joints is called Seebeck coefficient. Semiconductors are known to have high Seebeck coefficient values. Unlike semiconductors, metals have high Seebeck coefficient. Seebeck coefficient of metals, such as aluminum and niobium, and semiconductors, such as tin sulfide is measured at room temperature. These measurements show that our system is capable to measure Seebeck coefficient in range of. The error in the system is measured to be *0.14.