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Astronomicalinstrument Collection

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Astronomicalinstrument Collection: Astronomical instruments: achromatic telescopes
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Astronomicalinstrument Collection: Transit instruments for moving astronomical instruments
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Astronomicalinstrument Collection: Zenith sector telescopes
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Astronomicalinstrument Collection: Universal equatorial instrument by Edward Troughton
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Astronomicalinstrument Collection: Edward Troughtons mural circle
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Astronomicalinstrument Collection: Whirling table to demonstrate centrifugal force
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Astronomicalinstrument Collection: Circle by the Reverend Francis Woollaston
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Astronomicalinstrument Collection: Portable circle by Edward Troughton
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Astronomicalinstrument Collection: Josef de Mendoza y Rioss refinement to the
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Astronomicalinstrument Collection: Repeating circle without reflection by Edward Troughton
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Astronomicalinstrument Collection: English reflecting circle by Edward Troughton
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Astronomicalinstrument Collection: Astronomical circles invented by Tobias Mayer and Borda

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