An asymmetric pattern. Scottish Tartans Society notes: The pattern books of the old firm of weavers, Wilson's of Bannockburn, provide the first record of this sett which was not published until 1886 when James Grant included it in, 'The Tartans of the Clans of Scotland'. The pattern is unusual in that the half sett is not reversed to create a symmetrical square. Instead the full sett is simply repeated from right to left across the cloth.