Sole (in this case a double sole) stitched with a square awl at 10 stitches/inch.
In central Europe, where everything is stitched with a round awl, stitch length never seems
to go below 1/2 'Paris Point' (3.3 mm) which works out as 7 1/2 spi.
it very good.
U.K and U.S maker use square awl?