| 31. | He was a great-uncle of Jesse Ramsden, the scientific instrument maker.
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| 32. | However, tuning has varied over time, geographical region, or instrument maker.
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| 33. | In 1908 he became an astronomer and instrument maker at the Mount Wilson Observatory.
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| 34. | Andrea, Baptista and Jeronimo were all described as musicians and musical instrument makers.
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| 35. | Pieter was known as a mathematician, and was also an excellent instrument maker.
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| 36. | In the 16th century, European instrument makers were hampered by the materials available.
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| 37. | Jack passed on his pipe making skills to the next generation of instrument makers.
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| 38. | A range of other mbiras and kalimbas have been created by contemporary instrument makers.
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| 39. | Young was first listed in the 1825 Philadelphia directory as a mathematical instrument maker.
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| 40. | His mother was an artist and his father a cutler and surgical instrument maker.
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