Quantity   Component name
1 × Bell & Howell IMD-202-2 multi-meter Provides the case, power supply, 7441 decoders/drivers, and nixie tube displays
1 × Microchip ATmega328 AVR microcontroller 28 pin DIP, 32K flash, 2K ram
1 × 74HC148 8 line to 3 line priority encoder 14 pin DIP
1 × Small panel mount push button Momentary contact type
1 × Rocker switch 10A 120V AC type
2 × 10 conductor ribbon cable with IDC connectors 8" to 12" length
1 × 8 conductor ribbon cable with IDC connectors 8" to 12" length
1 × 6 conductor ribbon cable with IDC connectors 8" to 12" length
1 × Mini speaker This style - www.sparkfun.com/products/7950
1 × 5 mm LED Any color
1 × Panel mount 5mm LED holder
1 × 80 pin dual row IDC header Cut to size for connections to controller board and daughter boards
8 × 10K ohm 1/4 watt resistor Pull up for the rotary switch decoder
2 × Crimp style blade connectors
1 × Breadboard style solderable protoboard Controller board, this one works well for this application www.adafruit.com/product/1609
2 × Small protoboard 74148 board for rotary switch and board for LED, pushbutton, and speaker
1 × 28 pin DIP socket
1 × 2 Digit Omron A7BS BCD encoded thumbwheel switch w/end caps
1 × 8 way rotary switch Panel mount 3/8" hole