How many yards do I have left?
 
If you're asking this question, this is the tool for you.
 
It's easy to use:
Hang a piece of yarn on the balance and clip bits off until the "teeter-totter" balances.
Some simple math will tell you a close estimate of the yardage left.
All instructions and the simple formula are on the label.
 
It works with handspun if fairly consistent, novelty yarns, mystery fibers, garage sale treasures, etc. Design that project with confidence knowing you will have enough yarn.