Coin stacking demonstration, to help people understand (although not measure) force; keyboard depicted is a 1996 blue label Greenock Model M
92G7461
IBM membrane buckling spring — recognition
Stabiliser from a 1996 Greenock blue label IBM Model M
Industrial IBM Space Saving Keyboard
Stabilisers from a 1996 Greenock blue label IBM Model M
One-piece keycap (with integrated mount slider) from a 1996 Greenock blue label IBM Model M (key is a stepped caps lock
Moulding defects in a keycap from a 1996 Greenock blue label IBM Model M; this was a problem across many of the keycaps from this board
Earthing (grounding) connector from an IBM Model M 1391406 (Greenock blue label, 1996)
Two-piece keycap from a 1996 Greenock blue label IBM Model M, front view
Buckling springs from a 1996 Greenock blue label IBM Model M
IBM Model M 1391406 (Greenock, UK ISO 1996) — cable exit
IBM Model M 1391406 dye sublimated legends
IBM Model M 1391406 (Greenock, UK ISO 1996) — blue label
IBM Model M 1391406 (Greenock, UK ISO 1996) — foot, lowered
IBM Model M 1391406 (Greenock, UK ISO 1996) — bottom
IBM Model M 1391406 (Greenock, UK ISO 1996) — rear
Spacebar from an IBM Model M 1391406 (Greenock blue label, 1996) with the earthing (grounding) connector attached
Two-piece keycap from a 1996 Greenock blue label IBM Model M
IBM Model M 1391406 (Greenock, UK ISO 1996) — side, angled
IBM Model M 1391406 (Greenock, UK ISO 1996) — foot, raised
IBM Model M 1391406 (Greenock, UK ISO 1996) — rear label (affixed upside down on the case)
IBM Space Saving Keyboard model 1391472 with RGB modifiers
IBM Model M2 PCB 2
IBM Model M2 PCB 1
IBM Model M 1391406 (Greenock, UK ISO 1996) — PS/2 plug
5.5 mm (7/32") securing nut from an an IBM Enhanced Keyboard model 1391406 UK ISO (Greenock)
IBM Model M 1391406 (Greenock, UK ISO 1996) — side
IBM Model M 1391406 (Greenock, UK ISO 1996) — top
Greenock September 1996 1391406 IBM Model M — vertical keycap stabiliser with insert
Italiano: Meccanismo membrane buckling spring.
An illustration from US patent 4,118,611 "Buckling Spring Torsional Snap Actuator". Was used in the Model F and was the base of the Model M "membrane buckling spring switch".