You would get a fixed pitch font, probably Courier.
Understand that the font commands only SELECT from those that are available. The do not create it as such.
In your example, there in no fixed pitch Arial font, so the printer will do its best to fill your request. As the spacing has the highest priority in font selection, the printer will narrow the list to the available fixed pitch fonts, and then evaluate them on remaining criteria.
Jim Asman
jlasman@telus.net