This Davis Instruments #063 One-arm Protractor is a must-have for any boating enthusiast. With its precision measurements and durable construction, it's the perfect tool for planning your next voyage. Made by one of the most trusted brands in the industry, this protractor is designed to provide accurate readings and withstand harsh marine environments. Ideal for use on boats of all sizes, this one-arm protractor is easy to use and highly versatile. Whether you're charting a new course or measuring the angle of an object, this tool will get the job done quickly and accurately. So why wait? Add this Davis Instruments #063 One-arm Protractor to your collection today and start exploring the high seas with confidence!