My Evolution e-Keys mini USB piano keyboard has 17 mm wide naturals with 1 mm gaps between them so the center-to-center measurement is 18 mm, 5 mm less than what is normal on a piano. key spacing changes and becomes 14 mm for one keyboard and 15.36 mm for the other.
Found inside – Those two models kept the small size of the Minitel keyboard and. I can only imagine that an accordion would have a similarly-shortened keyboard. You can use keyboard shortcuts to enter the following formats, Greek letters, symbols, and special functions for mathematical expressions, whether answering on a computer, tablet, or smartphone.
