美国MEYER英制测试针规
| 型号 | 针规尺寸(inch) | 根/组 |
| M0M(-) | 0.011-0.060 | 50 |
| M0P(+) | 0.011-0.060 | 50 |
| M05M(-) | 0.0115-0.0605 | 50 |
| M05P(+) | 0.0115-0.0605 | 50 |
| M1M(-) | 0.061-0.250 | 190 |
| M1P(+) | 0.061-0.250 | 190 |
| M15M(-) | 0.615-0.2505 | 190 |
| M15P(+) | 0.615-0.2505 | 190 |
| M10M(-) | 0.011-0.250 | 240 |
| M10P(+) | 0.011-0.250 | 240 |
| M105M(-) | 0.115-0.2505 | 240 |
| M105P(+) | 0.115-0.2505 | 240 |
| M2M(-) | 0.251-0.500 | 250 |
| M2P(+) | 0.251-0.500 | 250 |
| M25M(-) | 0.2515-0.5005 | 250 |
| M25P(+) | 0.2515-0.5005 | 250 |
| M3M(-) | 0.501-0.625 | 125 |
| M3P(+) | 0.501-0.625 | 125 |
| M35M(-) | 0.5015-0.6255 | 125 |
| M35P(+) | 0.5015-0.6255 | 125 |
| M4M(-) | 0.626-0.750 | 82 |
| M4P(+) | 0.626-0.750 | 82 |
| M45M(-) | 0.6265-0.7505 | 82 |
| M45P(+) | 0.6265-0.7505 | 82 |
| M5M(-) | 0.751-0.832 | 84 |
| M5P(+) | 0.751-0.832 | 84 |
| M55M(-) | 0.7515-0.8325 | 84 |
| M55P(+) | 0.7515-0.8325 | 84 |
| M6M(-) | 0.833-0.916 | 84 |
| M6P(+) | 0.833-0.916 | 84 |
| M65M(-) | 0.8335-0.9165 | 84 |
| M65P(+) | 0.8335-0.9165 | 84 |
| M7M(-) | 0.917-1.000 | 84 |
| M7P(+) | 0.917-1.000 | 84 |
| M75M(-) | 0.9175-1.0005 | 84 |
| M75P(+) | 0.9175-1.0005 | 84 |













