Balance Scale Online
It works on the principle of a lever, where two pans hang on opposite sides of a pivot point (fulcrum). If both sides are empty, or contain equal weights, the scale remains level.
Punch two holes on opposite sides near the top of each cup. balance scale
A (or beam balance) is a simple machine used to measure mass or weight by comparing two items—one with a known weight and one with an unknown weight. It operates on the principle of equilibrium, where the heavier side sinks lower than the lighter side. It works on the principle of a lever,
A base (like a tall water bottle, cardboard box, or simply holding the hanger). or contain equal weights