The illustrated London news . the i by the use of a theodolite, a small pinhole being drilled into the spot exactly. It is obvious, however, that something more would ly finding tr- ™**;1 * ~?« nt +h~ --g up tne column it w< circles were struck in the atone from the given centre, anfive parts of these circumferences a hole was drilled, to ias guides in lowering the column into its case of the square columns, squares were laid out in:of circles, and the lines marked in the same manner. In lc any one of these circles or squares, the girders would not fit intomoved about with v
The illustrated London news . the i by the use of a theodolite, a small pinhole being drilled into the spot exactly. It is obvious, however, that something more would ly finding tr- ™**;1 * ~?« nt +h~ --g up tne column it w< circles were struck in the atone from the given centre, anfive parts of these circumferences a hole was drilled, to ias guides in lowering the column into its case of the square columns, squares were laid out in:of circles, and the lines marked in the same manner. In lc any one of these circles or squares, the girders would not fit intomoved about with very great fa-Li » l lieu hoist, worked by a portable engine of 10-horse power. The ropes, which were laid--—- j=—*ion on the ground, and which passed through blocks andcoiled on a grooved conical drum, set in motion by the- large-toothed wheels, working ir1 , . i(0 the I the squares or circles 1•r as secured. A devi ; whole building, asumns. The heavy j required height in two or t <»£Z ggftc-li^^ifiiit^Pi. «H€w • of • f mi -M *$$$- w$
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1840, bookidillustratedl, bookyear1842
