4-Piece Marine Navigation Chart Plotting Set with Rulers and Compass

This 4-piece nautical navigation set includes two transparent straight rulers with printed measurements, a metal divider compass, and a transparent plotting board with a circular angle measurer scale and printed grid markings. The transparent rulers allow easy viewing of the chart beneath. The 30 cm ruler length offers a practical working span. The plotting board provides reference markings for angle checks and grid-based layout. The metal divider compass supports spacing and transfer work. Suitable for navigation practice and route planning.