SIMRAD ROBERTSON RGC50 Gyrocompass Master Compass w/ GI50 Static Inverter GM-10In perfect working condition with warranty. You will receive what you can see in the photos. Simrad RGC50 Gyrocompass with GI50 Static Inverter Unit Labeled also TOKIMEC GM 10 (replacment unit) Model: 000 10124 001 The RGC50 is a compact gyrocompass, designed to enhance the navigation capabilities on small commercial, fishing vessels, and large pleasure yachts. A gyrocompass eliminates the inconvenience and limitations of magnetic compasses, and