Abstract: A speed square with a highly-visible level vial where the level vial and cushioning members are sandwiched and compressed between interacting portions of the square's blade and the square's heel, with the cushioning members positioned above the level vial adjacent to the blade, or below the level vial adjacent to the heel, as desired. The level vial may be fully contained with a thick heel, or may be positioned in order to be held partially or fully above the top surface of a thin or thick heel, within a viewing notched formed in the blade for better visibility.