zero method
| permeameter
| zero method | |
| meas.inst. | nulmethode |
| permeameter | |
| earth.sc. | permeabiliteitsmeter |
| el. | permeameter |
| el. meas.inst. | permeameter met lage μ volgens Fahy |
| |||
| nulmethode | |||
|
zero method : 2 phrases in 2 subjects |
| Electronics | 1 |
| Metallurgy | 1 |