Visible file

A visible file, sometimes just called a kardex, after a prominent purveyor, is a filing system for overlapping cards fixed in shallow drawers.

The best-known version was commercialized by Kardex.

Kardex filing cabinets, 20th century

The Library Bureau company commercialized the very similar L. B. Speedac.[1]

Another brand was the Index Visible System.

Notes

The Magazine of Business 47:294 (1925)

gollark: Or fixing it yourself. It can't be that hard. Just get some really long wires and crocodile-clip them to the big power lines which are still working.

gollark: Sounds inefficient compared to just using time travel.

gollark: Why do people go around doing leg shaving? It seems annoying and painful for the dubious aesthetic benefit you get.

gollark: https://www.youtube.com/watch?v=Fg4S24akd8E

gollark: <@!528237610943119381>

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[1] The Magazine of Business 47:294 (1925)