Tipping the Scales

This is you. A scale. A literal measuring scale. You are living in a laboratory researching the mysterious arrow blocks, which grow and shrink in response to mass. At least until you overhear that you're going to be tossed out and replaced. You must avoid this fate at all costs. Unfortunately, as an inanimate scale, you can't actually move and escape. Luckily, the materials were left all o…