Pocket Trackball size vs Reform Trackball size?

I’m looking at making a trackball unit similar to the Reform with the mouse buttons and curved keys, but with the Pocket Trackball. I know the Pocket’s trackball is 15mm, can someone let me know the Reform’s trackball size so i can compare and draft up a design?
Thanks!

Hello @99square and welcome to the forum!

The trackball in classic Reform is 25 mm in diameter.

You can find this sort of information in the Bill of Materials in the Reform Handbook here:

Search for “POM Ball Black”

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