Catalogued
Cyclograph (circular chart recorder)
- Made by
- Instrument practice; described by Karsten
- Year
- 1923
- Field
- Engineering
- Kind
- Physical object
- Room
- Change over time — Placed by reading its description, not yet studied
6 other forms share this skeleton
Source
Karsten 1923, Charts and Graphs, p.235, Fig.213
Attribution less certain: contested, or no single inventor recorded