Primitive tool, Navigate the world’s oceans

Primitive tool, Navigate the world’s oceans a great geographical discovery, In ancient times, when there was no complex mechanical and electronic devices, enabling accurate pave the way to the sea, sailors used the more primitive tools, for example, such as the one with which you will learn on.This so-called traverse-board, used in the XV – XIX centuries. Primitive device allowed to adhere to the exact course and monitor the speed of the vessel. It was designed in such a way that they are able to enjoy even illiterate sailors.

With 32-point compass pattern rounded top of the board bore a painted. Each point featured a line of eight holes radiating from the center of a circle. The upper circular sector, indicated the direction of travel, on the lower right-angled sector marked speed.Measurements made every half hour. Despite the primitiveness of such devices with its help were made great geographical discoveries.

Source — www.hakaimagazine.com