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l/m = 1693 × l m /Nec × m/kg, where l/m is the yarn length in metres, l m /Nec is the English cotton count and m/kg is the yarn weight in kilograms. The following length units are defined. Bundle: usually 10 lb (4.5 kg) Thread: a length of 54 in (1.4 m)—the circumference of a warp beam; Lea: 120 yd (110 m) Hank: a length of 7 leas or 840 yd ...
One source identifies a skein of stranded cotton as being 8.25 yards (7.54 m), of tapestry wool as being 10 yards (9.1 m), and crewel wool as being 33 yards (30 m). [ 1 ] In yarns for handcrafts such as knitting or crochet , hanks are not a fixed length but are sold in units by weight, most commonly 50 grams (2 oz).
Sewing industry seam allowances range from 1 ⁄ 4 inch (6.4 mm) for curved areas (e.g. neck line, armscye) or hidden seams (e.g. facing seams), to 1 inch (25 mm) or more for areas that require extra fabric for final fitting to the wearer (e.g. center back). Curved seams generally have a smaller seam allowance than straight seams; bulky seams ...
a commercial unit of length or area used to measure finished cloth. Generally speaking, one bolt represents a strip of cloth 100 yards (91.44 meters) long, but the width varies according to the fabric. Cotton bolts are traditionally 42 inches (1.067 meters) wide and wool bolts are usually 60 inches (1.524 meters) wide.
Equations may be used to determine the weight of warp and weft required for a particular fabric: Weight of warp = (0.65 x qty. of fabric (metres) x no. of warp ends) / count; If there are two colors in the warp, use the following equations: Weight of color A (kg) = (0.65 x qty. of fabric (metres) x no. of warp ends of color A) / count of color A
The use of cotton for fabric is known to date to prehistoric ... was introduced as a sewing thread by DuPont in 1936, ... typical length is 2.2 cm to 3.3 cm (7 ...