Goulston Street graffiti.

Goulston Street graffito. A brick is eight x four inches. Sergeant Halse stated: The writing is in good schoolboys script, 3/4 of an inch.The writing formed three lines ... To fit the bricks and to scale it would need to be placed similarly to this.

Jews, Juwes, Jewes, Jeuwes, Juwes, Jeuws, Juewes or Juews? These were the variant spellings according to different author's reports. The mid-line scrawl caused confusion. Writing on a brick wall, with chalk, isn't likely to assist legibility.
In this drawing I've used letters from Saucy Jack and Dear Boss missives
Jewes definition.