The Da Vinci Notebooks
The road of Messer Mariolo is 13 1/4 braccia wide; the House of Evangelista is 75.
It enters 7 1/2 braccia in the house of Mariolo. 723
426:723 : On this page and that which faces it, MS.I2 7la, are two diagrams with numerous reference numbers, evidently relating to the measurements of a street.