Possible Clues:

• One unwilling to accept measure of fine quality
• Hosiery statistic
• Weight unit by which fineness of yarn is measured
• Might the buck thread its way around Ulster? That's about the size of it
• Unit of weight used to measure the fineness of silk
• One to debunk a measure of fineness
• One refusing to be held back
• Fineness-of-silk measure
• One refusing to accept
• Someone refusing to accept old money