Sound

High quality aluminum tuning forks with frequency 256 to 512 Hz, set of 8, in a case, hammer included.Key Features:Comes in a hinged wooden case that has a soft lined interior with insets to fit component partsFrequency in hertz is stamped on each Tuning...

This set comprises 12 hardwood triangular prisms with 6 pairs identifiable by matching, colored musical notes and a unique sound when shaken. Prisms are 2"L x 2.4"H x 2.4"D.• Musical blocks help with personal development. Sensory play with these...