The Eli Terry Jr. Water Wheel is believed to be one of only two water wheels of its type in the United States. Originally it supplied power to the Terry Clock Shop located on this property. In the early 1830's the manufacture of locks began. By 1845 over one half million locks were made in Terryville. The business employed 38 people. By 1854 the Eagle Lock Company had been formed. Eagle Lock would eventually employ 1800 people. The company ceased operation in 1975.