How to measure a vibraphone keyboard

If you want to build a set of resonance tubes according the "tube-in-tube"-concept, or a folding frame - the beginning is the exact measure of the vibraphone keyboard. The following video explains how to do the accurate measures. The Excel spreadsheet allows you to enter the corresponding measurement results.

                     

file:///D:/Wyndorps/web/Rahmen_Messen.xlsx