After discovering more on the Gill Sans type anatomy, I observed that the gill sans typeface letters are very symmetrical and even.

As seen from the uppercase letters, we feel that one distinct feature of the letter “Q”, which is its calligraphy tail, enables us to recognise the Gill sans type. This can be seen in the chart to the left, where the calligraphic tail is very prominent unlike other fonts, where the “Q” not only has a straight tail, but its tail cuts through the letterform. This can be seen in FF Super Grotesk font