Visualized here:

This 0.6" x 0.6" fingertip surface area is 0.1" wider and taller than the traditional IBM Model F keyboards from the 1980s. The overall key size is the same, however. As such, they will have slightly steeper sides. Each key will retain the traditional / familiar height and orientation, however, except that I also intend to introduce some curvature on the front-to-back axis, in addition to the existing side-to-side axis.
Other key widths are given as:
Code: Select all
Tab 1.10"
Caps lock 1.39"
Left shift 1.78"
Left ctrl 1.29"
Left aux left 0.89"
Left aux right 0.89"
Space left 1.29"
Space middle 1.29"
Space right 1.29"
Right aux left 0.89"
Right aux middle 0.89"
Right aux right 0.89"
Right ctrl 1.29"
Right shift 1.78"
Enter 1.39"
Backslash 0.89"
Escape 0.89"
Escape 2 0.89"
Escape 3 0.89"
T7 0.89"
UPDATE Jul.04.2017: I have decided to use a 0.73" wide x 0.75" high key stride. This is 0.002" different than the original IBM Model-F keyboards per key.
Thank you,
Rick C. Hodgin