The elements of theoretical and descriptive astronomy, for the use of colleges and academies (1872)
White, Charles J. (Charles Joyce), 1839-1917 · Philadelphia, Claxton, Remsen & Haffelfinger · leaf 38
ly bodies. Fig. 5 representsa transit instrument. It consists of a telescope, TT, sustainedby an axis, AA, at right angles to it. The extremities of thisaxis terminate in cylindrical pivots, which rest in metallic sup-ports, VV, shaped like the upper part of the letter Y, and hencecalled the Ye.… … Pig. 6. telescope, there are two counterpoises, WW, connected withlevers, and acting at XX, where there are friction rollers uponwhich the axis turns. When the instrument is properly adjusted,the telescope, as it turns about with the axis AA, will continu-ally lie in the plane of the meridian; and,…
Astronomy
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