Preowned John Walker Tuning Fork A Standard Frequency 440Hz
Preowned John Walker Tuning Fork A Standard Frequency 440Hz
John Walker
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£6.99 GBP
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Preowned John Walker Tuning Fork A Standard Frequency 440Hz
This Preowned John Walker Tuning Fork A Standard Frequency 440Hz is in very good condition.
Handmade from hardened tempered blued steel by the renowned manufacturer, John Walker, whom "Tune at 20°C to achieve pure notes of strong duration."
'A' standard has a frequency of 440Hz (general tuning standard for musical pitch).
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