| Thomas Keith - Navigation - 1810 - 478 pages
...meridional difference of latitude between the two places denoted by the divisions. These degrees are reduced to leagues by multiplying by 20, or to miles by multiplying by 60. " THE CONSTRUCTION OF THE LOGARITHMICAL LINES ON GUNTER'S SCALE. (P) The line of numbers on which most... | |
| Robert Gibson - Surveying - 1814 - 558 pages
...meridional difference of latitude between the two places denoted by the divisions. These degrees are reduced to leagues by multiplying by 20, or to miles by multiplying by 60. О The use of the logarithmic^ lines on Gunlcr's Scale. By these lines aiid a pair of compasses, all... | |
| Robert Gibson - Surveying - 1821 - 594 pages
...meridional difference of latitude between the two places denoted by t"he divisions. These degrees are reduced to leagues by multiplying by 20, or to miles by multiplying by 60, The use of the logarithmical lines on Quitter's Scale. By these lines and a pair of compasses, all... | |
| Thomas Keith - Navigation - 1826 - 504 pages
...meridional difference of latitude between the two places denoted by the divisions. These degrees are reduced to leagues by multiplying by 20, or to miles by multiplying by 60. THE CONSTRUCTION OF THE LOGARITHM1CAL LINES ON GUNTER'S SCALE. (P) The line of numbers on which most... | |
| John Farrar - Trigonometry - 1833 - 274 pages
...representing 15 miles, or 15'. This line is constructed thus. Take the meridional parts corres* ponding to the several degrees of latitude from a table of...Fig. 28. sector. Thus, in the question of art. 49 (fig. 28), having the angle D = 31°, and DAB = 15°, and the side DB = 100 yards, we take half t of... | |
| John Farrar - Trigonometry - 1833 - 276 pages
...degrees of latitude from a table of meridional parts, and reduce them to degrees by dividing by CO. Take the quotients thus obtained, from the scale of...and DAB = 15°, and the side DB = 100 yards, we take half t of 100 on the line of lines, and open the sector till this extent shall reach from 15° to 15°... | |
| Thomas Keith - 1839 - 498 pages
...meridional difference of latitude between the two places denoted by the divisions. These degrees are reduced to leagues by multiplying by 20, or to miles by multiplying by 60. THE CONSTRUCTION OF THE LOGARITHMIC LINES ON GUNTEIl's SCALE. (39) Ilie line of numbers, on which most... | |
| John Farrar - Logarithms - 1840 - 270 pages
...construction of the other lines. There is moreover a line of meridonial parts, marked Her. or St., placed directly over a line of equal parts with which...Fig. 28. sector. Thus, in the question of art. 49 (fig. 28), having the angle D = 31°, and DAB= 15°, and the side DB = 100 yards, we take half t of... | |
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