Optical Galvanometer Arrangement
| Instrument | Optical Galvanometer |
| Type | Arrangement |
| Category | Seismology |
| Date of construction | 1964 |
| Maker/Place of construction | Sprengnether, Istrument Co.,USA |
| Instrument | Optical Galvanometer |
| Type | Arrangement |
| Category | Seismology |
| Date of construction | 1964 |
| Maker/Place of construction | Sprengnether, Istrument Co.,USA |
