U-Boot - The Board Game Wooden plotting tools

from the publisher:

Each pack includes includes all the plotting tools made in wood, (ruler, 360° protractor and pencil), customized with the Kriegsmarine logo.

U-BOOT: The Board Game is a real-time tabletop game of WW2 submarine warfare. An underwater cooperative war thriller that allows 1 to 4 players to assume the roles of the Captain, the First Officer, the Navigator, and the Chief Engineer on board of a type VIIC U-boat. The game is enhanced by a companion app, allowing for an unprecedented level of realism, as well as a challenging enemy A.I. to push your skills to the limit.

This is only a accessory! You need U-Boot - The Board Game to play with it.