Parallel Ruler 381 mm (15\") Chart Ruler | 4Boats

Parallel Ruler L - 381 mm (15\") parallel ruler for accurate manual chart plotting and navigation training.

• Length - 381 mm (15\") for plotting on standard charts
• Parallel motion - transfers bearings and courses accurately
• Straight edges - for precise, clean line drawing
• Compact profile - fits chart bags and instrument lockers
• Durable construction - lightweight and stable for deck use
• Ideal for manual navigation and training exercises

What's included: one parallel ruler unit for chart plotting.