Plastic mechanical counter balance scale by Balancing Act Corporation. With Troy, Ounce, Metric and Postal weighing straps. Original Styrofoam container

This mechanical counter balance scale was manufactured by the Balancing Act Corporation of Tempe, Arizona in the late 1970s to early 1980s. It was designed as an educational tool to demonstrate principles of weight and balance through a hands-on mechanical device. These scales were popular in educational settings and among science enthusiasts as they provided a practical demonstration of physics principles. The distinctive yellow plastic construction and functional design make it appealing to collectors of vintage scientific instruments and educational tools. Such items are valued by science teachers, educational memorabilia collectors, and those interested in retro scientific equipment for both their functional and decorative qualities.