Some common piano tuning equipment: From top rated to bottom: a tuning lever, a felt mute, a rubber mute, a felt temperament strip (remaining), and a Papps mute. Prevalent resources for tuning pianos incorporate the tuning lever or "hammer", several different mutes, as well as a tuning fork or Digital https://shanezozjt.wizzardsblog.com/30857992/the-smart-trick-of-piano-repair-that-no-one-is-discussing