Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 79
TRANSIT INSTRUMENT. Fig. 26, one horizontal and five vertical: the latter beingparallel to each other, and separated by equal intervals -1 FIG. 26. … 1. See note 1, to Art. 103. Of what iloes Chapter IV treat 1 How can we ascertain that the eath movesformly on h*r axis? Describe »he transit instrument i 68 THE EARTH VIEWED ASTRONOMICALLY. 1, 2; 2, 3; 3, 4; &c. These wires are situated in thefocus1 of the eye-glass atF, Fig. 25, their plane…
Astronomy
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