Over the weekend I bought a bag of stereo audio, video, and speaker cables at a yard sale, and these 3 items were also in the bag, inside a separate bag. The cartridge alignment gauge I recognize, the other two items, I'm a little fuzzy on. My best guess is that the adjustable pivot with the suction cup on it supports the plastic arm with the brush on it to clean the record groove before the stylus gets to it. If this is the case, what is the purpose of the bent wire with the little rubber pad attached to it on the arm by the brush?