This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...View, Looking South'. perforations, and a tide staff measure, set in the Gulf, so that its bottom was below the level of low tide, and its top above the level of high tide. The perforations admitted the water from beneath at normal pressure, and prevented wave fluctuations; thus the water in the caisson was perfectly ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...View, Looking South'. perforations, and a tide staff measure, set in the Gulf, so that its bottom was below the level of low tide, and its top above the level of high tide. The perforations admitted the water from beneath at normal pressure, and prevented wave fluctuations; thus the water in the caisson was perfectly still, and only rose and fell with the Gulf tide level. When the mean tide level was obtained, it was marked upon the stationary tide register and became the fixed point to which all other measurements of water level were referred, as we will show. We desired to project a line from the vertical altitude of 128 inches above a definite instead of a fluctuating.level; consequently, by means of the tide staff extending vertically from the caisson, that altitude was transferred to the land elevation where the survey began, by application of the principles of right angles, as in the Cross-sectional View. The geodetic level was adjusted to cause the vertical angle to intersect the tide staff at altitude of 128 inches; we then had 128 inches altitude as a fixed point on the beach, as the altitude of the commencement of the air line. As the mean tide level in the stationary tide register became a known and fixed quantity, it was taken as a basis of reference for the measure of the altitude of the air line at all station points along the entire line. We may illustrate this process of referring all other tide measurements to the f rocess of Referring all Measurements to Stationary Caisson.--Land Elevation, Looking East. original, by diagramming tide staff on stationary register, and tide staff on portable register at any other given point. XY isthe mean tide level, which is marked as a fixed point on staff A, the top of which is the altitude of 128 inches...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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New. Trade paperback (US). Glued binding. 232 p. Intended for a juvenile audience. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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New. Sewn binding. Cloth over boards. 232 p. Intended for a juvenile audience. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
