A treatise on surveying, comprising the theory and the practice (1906)
Gillespie, William Mitchell, 1816-1868, Staley, Cady, 1840- · New York D. Appleton · leaf 86
d to the sides ofthe trough, and carries one vertical and two horizontal adjustingscrews, shown at V L L. At the end saddles the lateral adjustingscrews are both at the same elevation as L the lower, and the in-termediate ones are alternately high and low to prevent the possi-bility of pinching the… … Y-TROUGH,Scale —>^ END OF BATt. /l ( :ii i III t! 1 ll ; < 1 I ! i 1 i 1 \ ^ 1^ 3 ^ with respect to vertical stresses, and weighs about 82 kilogrammes exclusive of bar and ice load. The ends are fitted with V-shaped wooden blocks to prevent the ice falling out. The whole trough is covered by…
Surveying
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