The Mark Master Degree is the Fourth Degree in Masonry, of the American Rite.  It is conferred in a Lodge of the Chapter of Royal Arch Masons.

The traditions of the degree make it of great historical importance, since by them we are informed that by its influence each Operative Mason at the building of the Temple was known and distinguished, and the disorder and confusion which might otherwise have attended so immense and undertaking was completely prevented.  The Fourth Degree is particularly directed to the inculcation of order, regularity, and discipline.  It teaches us that we should be good and true - not unfinished and imperfect.

The first section of the Mark Master Degree is said to take place a couple of years before the completion of the Temple of King Solomon.

Good Work, True Work, Square Work.  In the first section a young Fellowcraft, on the way to the Temple with his work, finds a curious yet beautiful stone.  This stone was neither oblong nor square. It did, however, have a peculiar form and beauty, which attracted his eye.  He exchanged this stone for his own and presented it as his work and attempted to receive the wages of a Fellowcraft.  This stone, was rejected by the builders, but, later became the chief stone of the Temple.

As a part of your obligation you promised that you would choose for yourself a personal mark.  Once this mark has been properly recorded, you will never change it.  It is yours and yours alone.

In the Mark Master Mason Degree the candidate is presented with the Mark of a Brother in the request of a favor to make a deep and lasting impression upon their mind.   They are further impressed never to turn away a Brother Mark Master Mason when the price of his Mark might procure for him the immediate necessities of life.

Charity is taught you as a Mark Master Mason.