The number 3500/05-01-01-01-00-00 (often written as 3500050101010000 ) refers to a specific configuration of the Bently Nevada 3500 System Rack
A small, black lens—no bigger than a pinhole—slid out of the ventilation grate. It whirred softly as it focused.
The rear of the 3500050101010000 rack provides access to the backplane, where all I/O modules are connected.