Set of 2 John Walker Blued Tuning Forks - A-440 and C-523.3

John Walker tuning forks have been manufactured for more than 150 years in Sheffield, England by the Ragg family.  The John Walker trademark is a guarantee of accuracy and quality workmanship. Tuning fork made from hardened and tempered blued steel with lettering stamped for the note and frequency. Set includes the following frequencies: A-440 C-523.3 Tuning forks come in a vinyl pouch. Approximately 5-1/2" long.