5 decade precision resistor for solderless breadboards. Any resistance from zero ohms to one million, one hundred and eleven thousand, one hundred ohms can be selected in ten ohm steps. All shunts installed gives close to zero ohms. Use gold plated .025" square posts and shunts. Requires 30 size 1206 SMT resistors as follows: 2-10 ohm, 4-20 ohm, 2-100 ohm, 4-200 ohm, 2-1K ohm, 4-2K ohm, 2-10K ohm, 4-20K ohm, 2-100K ohm and 4-200K ohm. See silkscreen for specs. Resistor values starting with 1 are placed on pads with “ 1 ” marking. Two-pin connector mounts on back to plug into breadboard. Optional pads provided for wire connections. Tested and working very well.