Matches in DBpedia 2014 for { ?s ?p Henry Gregory (1744–1782) was a mathematical and optical instrument maker. Gregory was apprenticed to John Fowler in 1732 and was himself in business from c. 1750–1792 from premises in Francis Court, Clerkenwell, London and an establishment known as "The Azimuth Compass" in Leadenhall Street, London. His company later became known as Gregory and Son.Gregory manufactured navigational instruments, including quadrants of the type invented by John Hadley and compasses.. }
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- Henry_Gregory_(instrument_maker) comment "Henry Gregory (1744–1782) was a mathematical and optical instrument maker. Gregory was apprenticed to John Fowler in 1732 and was himself in business from c. 1750–1792 from premises in Francis Court, Clerkenwell, London and an establishment known as "The Azimuth Compass" in Leadenhall Street, London. His company later became known as Gregory and Son.Gregory manufactured navigational instruments, including quadrants of the type invented by John Hadley and compasses.".