Nearly every graphic designer is into grids. The reason is simple: They establish a rhythm, define proportions and provide balance. Grids are all about order and harmony. As you picked a monospaced font, there’s – in contrast to proportional fonts – also a grid behind. Whoop!
Monospaced, or also non-proportional, means that every character (including some white space around) needs the same – you voted for ‘regular’ – width. It wasn’t very hard to define, what ‘regular’ is. I therefore compared several well-known fonts like Helvetica, Arial, Garamond, Apercu and a few more and then defined the pitch of the vertical lines based on their average width. The votes for a backslanted font outnumbered the other options, so those lines will have a 10° angle. Half of the grid is already set!
Other font metrics like baseline, x-height, length of ascenders and descenders define the horizontal lines of the grid. Regular x-height, ascenders and descenders (all voted for in the first round) result in a grid like below. Again: To find out what ‘regular’ actually is, I had a look at various fonts mentioned above. This is basically it. Sooner or later further metrics like the cap-height have to be defined, but as I first start drawing lowercase letters, I’ll come back to that later.