The masterpieces of the Centennial International Exhibition\ : illustrated (1876)
Centennial Exhibition (1876 : Philadelphia, Pa.), Shinn, Earl, 1838-1886, Smith, Walter, 1836-1886, Wilson, Joseph M · Philadelphia : Gebbie & Barrie · leaf 369
MECHANICS AND SCIENCE. l57 clamped in this position, the telescope indicates the true meridian. Any angle may now be laid off from the meridian, and the bearings of lines determined independent of the needle, which latter shows its variation from true north and south. This solar apparatus may be… … Engineers' Transit . \V. & I.. E. Gurley. Troy, N. Y. to which is at- rection without tached under- deviation, and so correcting what is termed the travelling of the object-glass. The telescope-tube is supported in a Y at each end, with a clip or band above, swinging on a pin in one arm of the Y,…
Centennial Exhibition (1876 : Philadelphia, Pa.) · Centennial Exhibition · Art · Decorative arts · Machinery
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