A person who operates a cyclograph or specializes in creating cyclic diagrams and records of circular patterns.
From 'cyclograph' + '-er' (suffix for a person who does something). This occupational term was used in specialized technical fields during the 19th and early 20th centuries.
A cyclographer was basically an analog data scientist—they'd operate precision instruments to capture the hidden circular patterns in everything from planetary orbits to vibrating machinery, translating invisible motion into visible evidence.
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