Values selected for your resistance substitution box were determined to be the most commonly used in modern solid-state circuits Values are from 10 to 1000k (1 meg) in 24 steps All resistors are 5% tolerance 1/2 watt Manufacturered by Elenco. Includes: PCB electronic components instruction & 25 watt soldering iron stand and lead free rosin core solder PCB measures 611mmX1016mmX16mm Add this kit to your STEM curriculum From the company that brings you Snap Circuits - 9 volt battery not included Hone your DIY soldering techniques on the Resistor Substitution Box Soldering Kit Enjoy the pleasure of having assembled and soldered it yourself
