The Working Tools of a Fellowcraft Mason are the Plumb, Square and Level.
The Plumb is an instrument used by operative masons to raise perpendiculars; the Square, to square their work; and the Level, to lay horizontals; but we, as Free and Accepted Masons, are taught to make use of them for more noble and glorious purposes. The Plumb admonishes us to walk uprightly in our several stations before God and man, squaring our actions by the Square of Virtue, and remembering that we are traveling upon the Level of Time to that undiscovered country from whose bourne no traveler returns.