The TOKYO KEIKI TOKIMEC REPEATER RP 21 is a reliable and robust device designed to repeat heading information from a gyrocompass, enabling operators to monitor essential navigation data from various locations on a ship. This repeater enhances the safety and precision of navigation systems, ensuring that crucial heading information is available even in the event of system failure. The RP 21 operates as a secondary unit to maintain accurate heading information, which is crucial for maritime operations, especially in challenging conditions.