| 1. | Horizon altitudes can be measured with a theodolite or a clinometer.
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| 2. | Consider tracking a helicopter flying towards the theodolite from the horizon.
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| 3. | This survey was later completed by Radhanath Sikdar using a Theodolite.
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| 4. | By the early 19th century, Europeans preferred theodolites to circumferentors.
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| 5. | :Use of the Theodolite for surveying probably facilitated grid designs.
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| 6. | The theodolite is an instrument for the measurement of angles.
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| 7. | A theodolite may be either transit or non-transit.
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| 8. | No other theodolite could match this precision at that time.
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| 9. | The theodolite is used to measure horizontal and vertical angles to target points.
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| 10. | Jesse Ramsden introduced the first precision theodolite in 1787.
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