Another thing to consider. What about rollers on an assembly line. Are they considered wheels? think about how long some assembly lines are and then think about all of the rollers that it takes to transport the goods. at least 7.
Another thing to consider. What about rollers on an assembly line. Are they considered wheels? think about how long some assembly lines are and then think about all of the rollers that it takes to transport the goods. at least 7.