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The 12-Inch Aluminum Arm Parallel Rule is a compact, reliable plotting tool engineered for precise navigation on small to medium charts and as an essential backup to electronic systems.
12" length and 1/4" thickness for convenient use on crowded chart tables
Brushed aluminum arms with polished aluminum handle for secure handling
Milled with beveled edges for clean, accurate line work
Integrated protractor scale for quick angle and course measurements
Lightweight yet durable construction for long-term onboard service
Keep this parallel rule in your navigation kit for dependable manual plotting whenever you need it.
