This Balancing Lever Kit includes 5 plywood levers measuring 600 x 44 x 3mm (approximately 23.75 inches long, graduated every 38mm), 4 fulcrum triangles measuring 32 x 32 x 64mm, and 40 square metal masses measuring 25mm matched to ±1% for consistent comparative studies. Each lever features a central groove for accurate fulcrum placement. The non-standard graduations are intentionally designed to encourage empirical reasoning rather than reliance on standard units. Outfits up to 5 student groups. Instructions not included. Suitable for physics classroom experiential learning of levers, balance, equilibrium, center of mass, and torque concepts through inquiry-based hands-on experimentation.