Cord Management Device Development

I need a compact mechanical device designed for cord or cable management. The device should store and retract a long, flexible line (10-30 meters). It should be able to be pulled out under tension and temporarily locked at various lengths with a manual lock. Additionally, it should automatically retract when the lock is released. Key Requirements: - Stores and retracts 10-30 meters of flexible line - Can be pulled out under tension - Temporarily locks at various lengths with a manual lock - Automatically retracts when lock is released - Compact and durable design Ideal Skills and Experience: - Mechanical engineering - Experience with locking mechanisms - Prototyping and product development - Familiarity with cord or cable management solutions Looking forward to your innovative solutions!