Thread: A tiny closet?
Actually rather common in test gear. I know that Tektronix made TM500-series modules that were little onboard "cases" in which you could shove all of the test leads, probes, etc...then snap on the TM500 rack's cover, and you were ready to go. Hewlett-Packard, also, had some similar "compartment modules" for various modular systems of their design.