Posted on April 17, 2015April 17, 2015 by callibethDaily lettering – bookhand, day 2 Day two of bookhand. This is Mitchell #2.5 nib, 8mm x-height, Strathmore Drawing 400 heavier weight. Rather stuck. I believe I’ll go down in size a little today. It’s just that there’s a big jump in size from a Mitchell #2.5 to a #3 nib.