- Reproduction
- [nb-NO]Object number[nb-NO]02122
- [nb-NO]Title[nb-NO]Helois Köln wattmeter
- [nb-NO]Creator[nb-NO]Helios AG (fabrikant)
- [nb-NO]Description[nb-NO]Helois Köln analoge elektrodynamische wattmeter. Torsiesysteem. Schaal 0 350. In een rechtstaande bruine opengewerkte houten behuizing. Fabr.serienr: 034230.
- [nb-NO]Date[nb-NO]1880
- [nb-NO]Object name[nb-NO]
- [nb-NO]Material[nb-NO]
- [nb-NO]Dimensions[nb-NO]
