DRAFT CALCULATIONS.

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

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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.