15" Brushed Aluminum Arms Parallel Rule (Weems & Plath 141) I1 - Sumatera - Malacca Strait - Cocos Keeling Is. to Christmas Is. British Admiralty Nautical Chart 4806:

British Admiralty Nautical Chart 4806: North Pacific Ocean

The 2011 ESP Code is an essential reference for shipping professionals

British Admiralty Nautical Chart 2297: Saaristomeri and Alands Hav is a standard nautical chart

While the course covers the necessary procedures for surveys

Scale: 470

15" Brushed Aluminum Arms Parallel Rule (Weems & Plath 141) I1 - Sumatera - Malacca Strait - Cocos Keeling Is. to Christmas Is. British Admiralty Nautical Chart 4806:Of all our traditional parallel rulers, the 15 inch (38. 1cm) Brushed Aluminum Arm Parallel Rule is a best seller. This sturdy acrylic parallel rule includes a protractor scale, is easy to use, and is a necessary tool for every seagoing navigator. The two straight edged rulers are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non moving ruler, you can effectively plot a course. 15 inches (38.