The tuning fork has long been the tool of choice to help students understand the relationship between wave frequency and pitch. These high-quality aluminum tuning forks are both rugged and economical. The set includes six forks whose frequencies are an integer multiple of 125 Hz, with each fork’s frequency stamped on it. Integer multiple frequencies allow students to quickly double, quadruple, or use higher integer-multiple frequencies of sound waves in their experiments. This technical set is ideal for sound, wave, and standing wave experiments.