Square and Compasses
It is a widely known symbol of Freemasonry. Both the square and compasses are architect's tools and are used in Masonic ritual as emblems to teach symbolic lessons. It is often seen with the letter "G" in the middle, which stands for “geometry”, a powerful science that helps unravel the mysteries and wonders of nature.
Ancient tradition says the letter "G” placed at the center of the symbol, represents God and Geometry. Belief in God is the primary requirement in order to become a Freemason; no atheist can be a member of this oldest, largest and most widely recognized fraternal organization in the world.
The compass (to draw circles), represents the realm of the spiritual eternity. It is symbolic of the defining and limiting principle, and also of infinite boundaries.
The angle measures the square, the symbol of earth and the realm of the material. The square teaches us to square our actions with all mankind, to be square, it is also the emblem of the Master of the Lodge because it is the proper Masonic emblem of his office. The square also represents fairness, balance, stability, giving a foundation for building upon.
Together, the compass and square represent the convergence of matter and spirit, and the convergence of earthly and spiritual responsibilities. As measuring instruments, the tools represent judgment and discernment.
Lambskin Apron
It is the most iconic symbolic emblem of Freemasonry. It is the unique badge of a Mason and it is considered a tool. It’s said to be more honorable than the Roman Eagle or the Golden Fleece, the Masonic apron is literally, the badge of a Mason carried with him into the next existence. Celebrated in poetry and prose, the Lambskin Apron is the initial gift of Freemasonry to a candidate, and at the end of life’s pilgrimage it is placed on his mortal remains and buried with his body in the grave.
This badge symbolizes regeneration, or a new life. It refers to the "pure heart."
It goes back to the days of working Masonry, when masons wore a long apron of thick leather to protect them against splinter; of rock and blows from their tools. As a piece of protective clothing, the apron symbolizes hard work and at the same time it helps create and maintain the strong bond of belonging to the same fraternity.
It is said that the apron refers to the "pure heart" and is associated with purification, which – in Freemasonry - was always symbolized by the cleansing, which preceded the ancient initiations into the sacred Mysteries.