dip measurement

[stanwood]

>Might as well remove one variable (aftertouch). For quick ratio checking of
>two or three notes, you can set the blow at whatever you want, run the letoff
>up to the string and caliper the dip without aftertouch.
>Bob Davis

I have one of those digital calipers from pianotech that you can tare to
zero at any jaw opening.  You can rest the depth gauge foot on the keybed,
bring the caliper down to just touch the top of the key, tare to zero, then
push the key down with the caliper and easily measure the stroke.

Stanwood