Special Features:

Plastic, o/a 8.500 in.Lg, 5.562 in.W, 0.600 in.Thk; scaledata nautical mile distance scale, 1.500, 000, black, range.0&50 miles nautical mile distance scale, 1.250, 000, green, range.0&19 miles seven radius of turnscales, 1.500, 000 black, time and distance to turn at selected speeds and bank angles, five radius of turn scales, 1.250, 000, green, timev and distance to turn at selected speeds and bank angles, four time scales, 1.500, 000, black, distance travelled in minutes at selected speeds, standard protractor scale, black, range.0&180 degrees, 1000 meter square grid, 1.250, 000, green, furnished w/o case

Properties:

An item generally constructed on a transparent plastic material. It embodies a standard inch scale, an inner and/or outer statue mile scale, a vertical statue mile scale, and may also include a nautical mile scale. The semicircular protractor portion may be offset or inset in forming a part of the item. It is designed to be used in plotting courses, measuring distances between two points on a chart or map, establishing meridians of references, solving wind angles, and determining bearing positions.