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Observation by Bill Barton: BAA Instrument 169

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Observer

Bill Barton

Observed

2020 Jan 06 - 08:46

Uploaded

2020 Jan 06 - 08:46

Objects

Historical

Equipment
  • Micrometer
Target name

Filar Micrometer

Title

BAA Instrument 169

About this image

Originally used by Frank McClean over one hundred years ago.

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