The NAKAKITA Mechanical Temperature Controller is a robust, self-acting control device engineered for precise temperature regulation in demanding marine environments. Specifically designed for critical applications such as Main Engine (M/E) Jacket Cooling Fresh Water systems, this controller operates without the need for external power. It features a clear, easy-to-read dial indicator with a scale from 0 to 150°C for at-a-glance monitoring. The unit utilizes a remote temperature sensing bulb connected by a durable, armored metal capillary tube, ensuring accurate temperature measurement even in high-vibration and harsh conditions. Housed in a rugged black enclosure, this NAKAKITA controller guarantees reliability and long service life for essential shipboard machinery.