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Chicago Switch

In Electronic Engineers Master Catalog 1985–86, Chicago Switch is shown to be an ITW brand.

Chicago Switch 34-Series keyboard switches are known only from a single Electronic Engineers Master catalogue entry. These are tall, slender switches suggested to be mechanical contact rather than reed. The heading “half-by-half keyboard switches” suggests that they support 0.375″ spacing.

Available options are SPST-NO, SPST-NC, SPDT and “alternate circuit”, with the last option possibly indicating alternate action.


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