Original WWII era German wooden map case rulers. They are designed to fit in the same slot as a pencil. These came from a clean out of an old writing supply store that went out of business right around the end of the war. These rulers were also frequently found in writing sets etc.. Price is for one. These are deadstock. All are in good condition, possibly with some light storage wear or minor flaws. They measure about 6 7/8" long.