The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 σελίδες |
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Σελίδα 5
... Observations . Section the third shows how to find the Latitude by the Meridian Altitude of the Sun. Section the fourth shows how to find the Variation of the Compass , with a description of the Azimuth Compass , and its use . In this ...
... Observations . Section the third shows how to find the Latitude by the Meridian Altitude of the Sun. Section the fourth shows how to find the Variation of the Compass , with a description of the Azimuth Compass , and its use . In this ...
Σελίδα 16
... observed . RULE II . To reduce Quantities of the same , or of different Denominations to Decimal Fractions of higher denominations . If the given quantity consist of one denomination only , write it as the numerator of a vulgar fraction ...
... observed . RULE II . To reduce Quantities of the same , or of different Denominations to Decimal Fractions of higher denominations . If the given quantity consist of one denomination only , write it as the numerator of a vulgar fraction ...
Σελίδα 30
... observed , that the operation is shorter in the larger prime numbers ; for when any given number exceeds 400 , the first quotient , being added to the Logarithm of its next lesser number , will give the Logarithm sought , true to 8 , or ...
... observed , that the operation is shorter in the larger prime numbers ; for when any given number exceeds 400 , the first quotient , being added to the Logarithm of its next lesser number , will give the Logarithm sought , true to 8 , or ...
Σελίδα 43
... observation made upon something going before . GEOMETRICAL THEOREMS . THEOREM I. PL . 1. fig . 20 . If a right line falls on another , as AB , or EB , does on CD , it either makes with it two right angles , or two angles equal to two ...
... observation made upon something going before . GEOMETRICAL THEOREMS . THEOREM I. PL . 1. fig . 20 . If a right line falls on another , as AB , or EB , does on CD , it either makes with it two right angles , or two angles equal to two ...
Σελίδα 81
... observed ; that to find a side , when the angles and one side are given , any side may be made the radius ; and to find an angle , one of the given sides must be made the radius . So that in the 1st , 2d , and 3d cases , any side , as ...
... observed ; that to find a side , when the angles and one side are given , any side may be made the radius ; and to find an angle , one of the given sides must be made the radius . So that in the 1st , 2d , and 3d cases , any side , as ...
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ABCD acres altitude Answer arch base bearing centre chains and links circle circumferentor Co-sec Co-tang column compasses contained cube root decimal difference of latitude Dist divided divisions divisor draw east Ecliptic edge EXAMPLE feet field-book figure four-pole chains given angle given number half the sum height Hence Horizon glass hypothenuse inches instrument length logarithm measure Meridian Altitude meridian distance method multiplied natural co-sine natural number natural sine Nonius number of degrees object observed off-sets opposite parallel parallelogram perches perpendicular plane prob PROBLEM proportional protractor Quadrant quotient radius rhombus right angles right line Secant sect semicircle Sextant side square root station subtract Sun's survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence