This is a miniature reproduction of a 1970 Electro Controls theatrical lighting patch panel.  This patch panel had 124 20A circuits patchable among 22 7.2k dimmers, 2 7.2k non-dims, and a 7.2k amp.  The patch panel also had worklight controls, houselight controls, and interfaces for a wired comm system.  This is a replica of a patch panel used in a 1,064-seat proscenium community theater.  

See also my Electro Controls lighting controller model that was part of this system.

This model is rendered at 30% scale, so there is more detail in the model file than in the print.  The Electro Controls logo and ammeter gauge face that are included here are printable labels at the same scale.