Geo. Washington D's Lightning Educator and Calculator

This simple educational item allows a student of mathematics to turn the wheel and view multiplication tables up to 25. Surprisingly sturdy, it's made of steel and was copy writed in 1905; the side devoted to reading even contains a help wanted add - 'Good agents wanted.'

This wheel could be 'mailed to any part of the United States' for twenty fives cents, and out of the states, for thirty.