Image: Timpani, Yamaha pedal timpani

Original image(3,264 × 1,840 pixels, file size: 2.9 MB, MIME type: image/jpeg)

Description: The inside, bottom of a Yamaha pedal timpani, showing the mechanical tension-adjusting system
Title: Timpani, Yamaha pedal timpani
Credit: Own work
Author: Skoch3
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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