The distance the key travels from rest position until the end of the stroke at the bottom of the key frame.
Spec range: roughly 9.5mm - 10.5mm.
There are several ways of measuring key height. Our recommendation is to use calipers for the most exact measurement:
Key dip is regulated by placing paper punchings under the front rail felt punching.
Product Review: The WNG Key Dip Tool
Storing punchings can be difficult. Our recommendation for this process can be found in Key Height Regulation Methods and Tools.