| Code | Description | D | D1 | H | B | Ratio | Dial scale(norm) |
|---|---|---|---|---|---|---|---|
| SK60 R □□□□ | SK60 | 57.5 | 54.5 | 31 | 9.5 | 10:1, 12:1, 15:1,16:1, 18:1, 20:1, 24:1, 25:1, 30:1, 36:1, 40:1, 50:1, 80:1, 100:1 | 0-10, 0-12, 0-15,0-16, 0-18, 0-20, 0-24, 0-25, 0-30, 0-36, 0-40, 0-50, 0-80, 0-100 |
| SK80R □□□□ | SK80 | 81.5 | 78.5 | 37 | 11.5 | ||
| SK100 R □□□□ | SK100 | 107 | 100 | 36 | 15 |