It is Not a Tau

The Master’s Emblem has been called a ‘tau’, the nineteenth letter of the Greek alphabet, and similar to the letter T.  Why is it inverted or upside down on the Apron?  Where is a tau relevant in the ritual of regular Craft Masonry?  These can’t be answered because the Master’s Emblem is not a Tau.  Buy the book and find the correct answer. Visit http://www.mastersemblem.com to order the book.