Adjusting Let-off in a Vertical Piano

Adjusting Let-off is the process in the regulation process of adjusting when the hammer is released by the jack as the hammer moves forward.  This is one of the promary steps in the basic regulation process.  The type of regulating screwdriver will vary depending on what type of regulating screws you have in your piano.  There are a number of tools that are useful in performing this step in the regulation process:

We have a DVD available which includes this video as well as 12 other videos on vertical paino regulation available here in our store: Vertical Piano Regulation Videos on DVD