International Latitude Observatory
The International Latitude Observatories were a system of (originally) six observatories located near the parallel of 39° 08' north latitude. They were used to measure the variation in latitude that occurs as a result of the "wobble" of the Earth on its polar axis.
The original six observatories were located in:
- Gaithersburg, Maryland
- Cincinnati, Ohio
- Ukiah, California
- Mizusawa, Iwate, Japan
- Charjui, Turkestan
- Carloforte, Italy
Read more about International Latitude Observatory: History
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“Where there is an observatory and a telescope, we expect that any eyes will see new worlds at once.”
—Henry David Thoreau (1817–1862)