Eisco Labs Scientific Steel Tuning Forks, Set of 8 (Scientific Pitch, C4 = 256Hz) with Wooden Case - Designed for Physics Experiments music_update_2020 This version will not work

This version will not work on 1/2 size guitars

Other FeaturesBuilt-in high sensitivity condenser microphone Excludes AMP&Not supported PHONE

Active Volune DesignActive volune design for eliminating signal loss

like Stewmac bits

you are no need to buy any extra accessories now

Eisco Labs Scientific Steel Tuning Forks, Set of 8 (Scientific Pitch, C4 = 256Hz) with Wooden Case - Designed for Physics Experiments music_update_2020 This version will not workEisco Labs Scientific Steel Tuning Forks, Set of 8 (Scientific Pitch, C4 = 256Hz) with Wooden Case Designed for Physics Experiments EISCO Steel Tuning Forks, Set of 8, in Wooden Case(8) Tuning ForksNickel plated, plain shanks, with frequency marked, C (256), D (288), E (320), F (341), G (384), A (426), B (480), C (512). Set supplied in wooden case. Steel tuning forks for physics experiments Supplied in wooden case