Every man his own civil engineering and surveyor; a manual in two parts .. (1895)
Casterline, Smith. [from old catalog] · [Hartford City, Ind., E. S. Huffman, printer] · leaf 14
ite end from the smallholes. Place the hinge open on the two ends,using a hinge that will allow a space between,of at leeist half an inch. A table-hinge will,perhaps be the best. The leveling-screw is to be 4>^ inches long,having a thread cut nearh^ its entire length. (5) On one end is to be a… … The chimp screw is to be 3 inches loni;*,with a thread cut on one end and a T, one (6) inch long- made on the other. This is to beput throug-h the long- hole and screwed intothe bottom of the level. Its use is to keep thelevel and its base tog^ether when being- carried.To clamp; turn the T across…
Surveying
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