[USMA:33083] fans

[john mercer]

Hello. i have a question about desk fans. Has anyone ever measured the diameter of one. They usually come in 6 in 12 in and 16 in sizes. The reason i am asking this are these measurements exact or just rounded numbers. If they are just rounded numbers could the fans be 15 cm 30 cm and 40 cm? If these inch measurements are exact to convert them to cm to be legal you would have to give the exact size in cm. In the states do you have the chain of stores called subway? We have them in Canada and they advertise their sandwitches in 6 in and 12 in sizes. I wonder how close they are to these sizes? The reason i am asking about the size of fans is because i don't have a braille ruler to measure them myself. Thank you for your help, i really apreciate it a lot. john Mercer.