How many feet is that 50 millimeters?!
1 feet =0.3048 meters1 feet =0.3333 metersGenerally refers to the country's ruler shichi.50 millimeters is 0.05 meters, the conversion is 0.15 feet, that is, 1 and a half inches.
Triangle ruler for school use.
Then you'll get 5 by 33.3. That's the ruler
