Digital read-out actuator-indicator for multi-turn shaft-actuated instrumentalities

摘要: A knob-like actuator and indicator device for mechanical connection to a multi-turn instrument such as potentiometer effective upon manual rotation of part thereof operate the concurrently through gearing counting or revolution-indicating mechanism including double-indexing number wheel means, provide at face end numerical decimal indication complete revolutions fractional shaft from an zero position. Use first means reduces by 50 percent gear ratio between manually-rotated knob, thereby reduce wear greater amount tooth-impact counter teeth. The (fastest) is numbered two zero-through-nine counts rotates only one-half revolution in registering one-tenth shaft. Reduction permits gross reduction diameter actuator-indicator, use low cost, plastic parts.