[Illustration]{128}

[Illustration]

The following table may be used in calculating the required Laps per Inch on Bobbin for any given hank roving:{129}

1 hank or below, 7.5 x square root of hank = Laps per Inch
1 hank to 2 hanks, 8.5 x square root of hank = Laps per Inch
2 hanks to 3 hanks, 9.5 x square root of hank = Laps per Inch
3 hanks to 4 hanks, 10.0 x square root of hank = Laps per Inch
4 hanks and above, 10.5 x square root of hank = Laps per Inch

Good results are obtained by using 9.3 x square root of hank.