Last NTM: 20-Apr-2018

Abbreviations and Terms used on Paper and Electronic Navigational Charts

Edition Date: 8-Mar-1991

Title: How to Read a Nautical Chart: A Complete Guide to Using and Understanding Electronic and Paper Charts

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12" Aluminum Arm Parallel Rule South Puget Sound Last NTM: 20-Apr-2018No navigator should be without a good set of parallel rules as part of the navigation back up plan in the event of an electronic navigation failure. These parallel rules are accurate and durable. Choose from four arm lengths. Overview Black parallel lines on each rule improve ease of use and accuracy. Brushed aluminum arms. Polished aluminum handle. Milled acrylic with beveled edges. No protractor scale. Lifetime warranty. Specifications Marine