The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 sider |
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Side 134
... links ; ( and this is the most natural division ) or by one of 50 links , which contains two poles or perches : but because the length of a perch differs in many places , therefore the length of chains and their respective links will ...
... links ; ( and this is the most natural division ) or by one of 50 links , which contains two poles or perches : but because the length of a perch differs in many places , therefore the length of chains and their respective links will ...
Side 135
... links of a four - pole chain , there is a large ring , or sometimes a round piece of brass , fixed at every 10 links ; and at 50 links , or in the middle , there are two large rings . In such chains as have a brass piece at every 10 links ...
... links of a four - pole chain , there is a large ring , or sometimes a round piece of brass , fixed at every 10 links ; and at 50 links , or in the middle , there are two large rings . In such chains as have a brass piece at every 10 links ...
Side 136
... chains and links is obtained , which must be registered in the field book , as will hereaf- ter be shewn . If the distance exceeds 10 , 20 , 30 , & c . chains , when the leader's pegs are all exhausted , the hind- er chainman , at the ...
... chains and links is obtained , which must be registered in the field book , as will hereaf- ter be shewn . If the distance exceeds 10 , 20 , 30 , & c . chains , when the leader's pegs are all exhausted , the hind- er chainman , at the ...
Side 137
... chains in that distance ; to which if the surplus links be added , the length of the stationary distance is known in chains and links . It is customary , and indeed necessary , to have red , or other coloured cloth , fixed to the top of ...
... chains in that distance ; to which if the surplus links be added , the length of the stationary distance is known in chains and links . It is customary , and indeed necessary , to have red , or other coloured cloth , fixed to the top of ...
Side 138
... chain cannot be carried horizontally , half a chain , or less , may , and the sum of these half chains , or links , will give the base , as before . = If the inclined side of the hill be the plane sur- face , the angle of the hill's ...
... chain cannot be carried horizontally , half a chain , or less , may , and the sum of these half chains , or links , will give the base , as before . = If the inclined side of the hill be the plane sur- face , the angle of the hill's ...
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Vanlige uttrykk og setninger
acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given angle given number half the sum Horizon glass hypothenuse inches instrument latitude length logarithm measure meridian distance minutes multiplied natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle side sights square root station stationary distance subtracted survey taken tance Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Populære avsnitt
Side 52 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Side 39 - The Circumference of every circle is supposed to be divided into 360 equal parts, called Degrees ; and each degree into 60 Minutes, each minute into 60 Seconds, and so on.
Side 18 - DISTINGUISH the given number into periods of two figures each, by putting a point over the place of units, another over the place of hundreds, and so on, which points shew the number of figures the root will consist of. 2. " FIND the greatest square number in the first, or left hand period...
Side 120 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Side 31 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Side 87 - On the line of lines make the lateral distance 10, a transverse distance between 8 on one leg, and 6 on the other leg. On the line of sines make the lateral distance 90, a transverse distance from 45 to 45 ; or from 40 to 50 ; or from 30 to 60 ; or from the sine of any degree to their complement.
Side 7 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Side 82 - ... longer than the intermediate adjacent ones, these are whole degrees ; the shorter ones, or those of the third order, are 30 minutes. From the centre, to 60 degrees, the line of sines is divided like the line of tangents ; from 60 to 70, it is divided only to every degree ; from 70 to 80, to every two degrees ; from 80 to 90, the division must be estimated by the eye.