Twine Size Table
Twine (small rope) sometimes is sold in standard numbered sizes, just like wire or machine screws. But, of course, the sizes aren’t the same for each. Several of these are useful for antenna work. So, if you see a reference to “Twine Size #15”, now you will know how big it actually is. (Sizes are approximate, as there are some variations for twisted vs. braided twine, etc.)
| Twine Size | Diameter (mm) | Diameter (inches) |
|---|---|---|
| #4 | 0.66 | 0.026 |
| #5 | 0.75 | 0.030 |
| #6 | 0.85 | 0.033 |
| #7 | 0.92 | 0.036 |
| #9 | 1.07 | 0.042 |
| #12 | 1.20 | 0.047 |
| #15 | 1.32 | 0.051 |
| #18 | 1.52 | 0.059 |
| #21 | 1.70 | 0.066 |
| #24 | 1.85 | 0.073 |
| #30 | 1.98 | 0.078 |
| #36 | 2.16 | 0.085 |
| #42 | 2.36 | 0.093 |
| #48 | 2.62 | 0.103 |
| #60 | 2.95 | 0.116 |
| #72 | 3.17 | 0.125 |
| #96 | 4.01 | 0.158 |
| #120 | 4.32 | 0.170 |