Suitable to upright/grand piano
Tool/gauges used to measure distance from underside of string to top of hammer head felt. This is an important adjustment as too much or too little distance from the hammer to the string will cause the action to play improperly. Different pianos (even similar pianos with different setups) will use different distances for hammer blow.
Less keydip=less hammer blow, more keydip=more hammer blow. More hammer travel gives more power, less travel is less power (but often better repetition). Piano regulation often involves compromise and balance. These gauges will help.
Material: Brass
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