Of course mice measure in metrics! What use are imperial units when the smallest basic weight unit (the ounce) and the smallest basic height unit (the inch) are a third of yourself?
Artist's noteI don't know whether this work can be called "inked". I was only seeking to give color to my pencil drawings so that, at least for one day, you could see what the rats looked like.
The conventional method for colorizing pencils on computer is to set the color to transparent and paint over the pencil; or so Photoshop leads you to think. There is a little-known alternative: set the white of the paper to transparent, and paint behind the pencil lines. (That is, keep the original pencil in the top layer.) This is what I used here.
However, the colors are, for the most part, solid; and were done by drawing a vector of the shape described in the pencil drawing. The very act of tracing over the pencil drawing with vector graphics means I could, theoretically, select a line thickness ≠ 0 and all the pencil lines would appear with a pristine, computer-made trace (that is, the outlines would be inked). However, due to a series of shortcuts I took (such as using a single vector for the male rat's jacket, collar, and sleeve) it just ends up looking creepy.