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"Instrument" in what
Elliptograph
made in London
© National Museums Scotland
000-180-000-991-C
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Sextant
made in London
© National Museums Scotland
000-190-004-729-C
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Sounding sextant
probably made in London
© National Museums Scotland
000-180-001-168-C
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Surveyors' chain
made in Sheffield
© National Museums Scotland
000-100-104-179-C
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Thermometer
© National Museums Scotland
000-180-000-975-C
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