Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 312
Fig. 132.—Theodolite. If we refer again to Fig. 18, we see the method bywhich Tycho tried to get the two co-ordinates. On thehorizontal circle there are the graduations for azimuth,or the measurement from the south along the horizon,and on the vertical quadrant are the graduations for eijAP. XIX.]… … Fk;. 133.—Portable Alt-azimutli. The upper part of the instrument is, as one sees, nothingmore tlian a transit circle exactly equivalent to the one u 290 STARGAZING r PAST AND PRESENT. [book iv. described. We have a telescope carried on a horizontalaxis, supported by a pillar; we have the reading…
Astronomy · Telescopes
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-801-523.webp)
