I can tell you the size of the NewFace button holes must be larger than 6.5mm across. That's the diameter of the Multimec button caps intended for the fascia.


Maybe webroach has the measurements from his previous effort.
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FireFox31
110gig MKIIa (30+80), Eutronix lights, 32 meg stacked RAM, Filener orange gel lens, Greenlights Lit Buttons green set