In some product conditions, where direct type is not a proper choice, the measurement should use indirect contact type. In this type, air nozzle hole is set under a leaf with carbide ball on its measuring point. The carbide ball directly contact the product surface. Differ with direct type, air from the nozzle hole is not directly released into the product.
LA Type:
| Nominal Size ød exceeded ~ less | L1 | L2 | L3 |
| 10 exceeded 14 or less | 7 | 45 | 95 |
| 14 exceeded 20 or less | 8 | 45 | 85 |
| 20 exceeded 24 or less | 10 | 45 | 85 |
| 24 exceeded 40 or less | 10 | 45 | 85 |
| 40 exceeded 50 or less | 15 | 50 | 100 |
| 50 exceeded 65 or less | 15 | 50 | 100 |
| 65 exceeded 100 or less | 15 | 50 | 100 |
LB Type:
| Nominal Size ød exceeded ~ less | L1 | L2 | L3 |
| 10 exceeded 14 or less | 4 | 45 | 95 |
| 14 exceeded 20 or less | 4 | 45 | 85 |
| 20 exceeded 24 or less | 4 | 45 | 85 |
| 24 exceeded 40 or less | 4 | 45 | 85 |
| 40 exceeded 50 or less | 4 | 50 | 100 |
| 50 exceeded 65 or less | 4 | 50 | 100 |
| 65 exceeded 100 or less | 4 | 50 | 100 |
