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|Family||Futaba clicky switch|
|Switch type||Latching lock|
|Sense method||Metal leaf|
|Switch mount||Plate mount|
The Mk I switch was a peculiar adaptation of the regular push switch. The switch shell contains a latch track. Into the slider is placed a platform that bears the latch arm; a small wire rod appears to be used to hold the arm in the platform. The keycap mount of the slider is not known, but the platform itself has a square recess and requires custom keycaps.
The switch weight is 130 gf.
Mk I switch from an NEC PC-8801mkII keyboard
The Mk II switch has the latch arm mounted directly onto the slider; as such, this does not leave sufficient room for the standard negative Futaba keycap mount, so the front slot of the cross is shifted to the right. As a result, a custom keycap mould is required, and not the same custom keycap mount as required by the Mk I.
The arm pivots at the top of the slider, and runs down into a latch mechanism inside the front of the shell.