| RGO Archives/RGO 6 contains: |
|---|
| <-- See earlier |
|---|
| 643 |
Absolute measures of magnetic horizontal force |
| 644 |
Absolute measures of magnetic horizontal force |
| 645 |
Absolute measures of magnetic horizontal force |
| 646 |
Absolute measures of magnetic horizontal force |
| 647 |
Records of the magnetic theodolite |
| 648 |
Records of the bifilar and vertical force magnets |
| 649 |
Records of the bifilar and vertical force magnets |
| 650 |
Records of the bifilar and vertical force magnets |
| 651 |
Records of the bifilar and vertical force magnets |
| 652 |
Records of the bifilar and vertical force magnets |
| 653 |
Declination magnet adjustments |
| See later --> |
|---|
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