Example 18.—Calculate the yarn counts in the Alloa system for a fabric 180 yd. long with 14 courses per inch, 66 in. wide, the take-up is 2 and the weight 24 lb.
| 14 × 66 × 180 × 2 | |
| = 57¾ Alloa. | |
| 24 × 240 |
Example 19.—Estimate the skein counts for a fabric 200 yd. long, 80 lb. in weight, 60 in. wide, 12 courses per inch, with a take-up of 2·25.
| 12 × 60 × 200 × 2·25 | |
| = 15·8 skeins counts. | |
| 80 × 256 |
Example 20.—Give the worsted counts to reduce the weight to 60 lb. for example 19.
| 12 × 60 × 200 × 2·25 | |
| = 9·6 worsted or 2/19's approx. | |
| 60 × 560 |
Example 21.—Calculate the length of knitted fabric which can be secured from 30 lb. of 2/42's cashmere, 22 courses per inch, 63 in. wide, take-up 1½.
This is obtained from formula 13 and may be stated thus—
| weight × counts × basis | |
| = length. | |
| courses × width × take-up | |
| 30 × 21 × 560 | |
| = 170 yd. approx. | |
| 22 × 63 × 1½ |
Example 22.—Find the length per 100 lb. obtained in 2/30's merino, take-up 1·75, 21 courses per inch, 64 in. wide.