Dial scales are Mechanical Analog type scales. These scales use a traditional spring and lever mechanism. Weight is distributed through brackets and levers. Levers connect to a plate with a spring. The spring stretches in proportion to the weight imposed. A pivot translates the up-and-down motion to a side-to-side motion. A rack and pinion translates the side-to-ide motion to a rotational motion. The dial or indicator will turn and correct weight will appear in the window.