Jesse Ramsden (1735–1800) was a notable English instrument maker, best known for his high-quality scientific instruments and improvements in precision measurement. He is particularly recognized for his work in the field of surveying and for the invention of the Ramsden eyepiece, an optical device used in instruments like microscopes and telescopes. Ramsden's contributions to the field of instrumentation included advancements in the manufacturing of theodolites, barometers, and other scientific tools.
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