THIS IS A SWITCH
Sometimes things you buy online don't come in as you expected them. Take the above switch for example. It is intended for switching resistors in a speaker level crossover and I found them for $15 each. They are electroswitch and have 10A contact ratings and i'm going to give them a shot even though they are a bit larger than I expected. One thing is for sure, making an adjustment will really give you a sense of accomplishment. My favorite part is the little cloth bag holding all of the hardware. The closest electroswitch I could find was around $250 from digikey and are about 1/2 the size of this beast.