dividing engine


dividing engine

Machine used to mark off equal intervals accurately, usually on precision instruments. Georg Friedrich von Reichenbach (1772–1826), a German maker of astronomical instruments, designed an early dividing engine, and Jesse Ramsden (1735–1800), a British pioneer in the design of precision tools, designed dividing engines of great accuracy for both circles and straight lines and produced highly accurate sextants, theodolites (see surveying), and vertical circles for astronomical observatories.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on dividing engine, visit Britannica.com.

Seen & Heard

What made you look up dividing engine? Please tell us what you were reading, watching or discussing that led you here.