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PART V.

ASTRONOMICAL INSTRUMENTS.

CHAPTER I.

HADLEY SEXTANT.

Description of the Sextant.
Adjustment of the Sextant

CHAPTER II.

THE TRANSIT INSTRUMENT.

Description of the Transit Instrument
Adjustments of the Transit Instrument
Method of observing with the Transit .
Use of the Portable Transit

PAGR

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CHAPTER III.

THE ALTITUDE AND AZIMUTH INSTRUMENT.

Description of the Altitude and Azimuth Instrument

Adjustments of this Instrument

Method of observing with this Instrument

Use of the Instrument

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