KBK update for Thursday, 12th November

Yesterday, I received a package of 102 switches from olepigeon in the United States, all NOS surplus parts, largely if not entirely from Excess Solutions. All but one type is unlisted on their store. Included in this was the recently-discovered Marquardt Series 6184 tactile type. I came across this two months ago in Electronic Engineers Master 1989–1990, and never expected to lay my hands on them. Now, thanks to olepigeon, they can now be observed. They use a click–tactile mechanism unlike any other. Note that although the EEM catalogue entry listed them as “tactile”, these are click–tactile switches. At least, it seems to be the most likely explanation that these are the same switches, although it is possible that this is a separate click type that was introduced later, or introduced but never advertised.

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