The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtE. Duyckinck, 1811 - 508 σελίδες |
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Σελίδα
... Chain 134 The Circumferentor 152 The Theodolite 159 3. To find the Latitude by the Meridian Al- titude of the Sun 316 4. Variation of the Com- pass S18 The Semicircle 164 Mensuration of An- LIST OF TABLES . gles by these In . struments ...
... Chain 134 The Circumferentor 152 The Theodolite 159 3. To find the Latitude by the Meridian Al- titude of the Sun 316 4. Variation of the Com- pass S18 The Semicircle 164 Mensuration of An- LIST OF TABLES . gles by these In . struments ...
Σελίδα
... Chain 134 The Circumferentor 152 The Theodolite 2. Description of Instru- 3. To find the Latitude by the Meridian Al- titude of the Sun 315 4. Variation of the Com- 305 159 pass 918 The Semicircle 164 Mensuration of An- LIST OF TABLES ...
... Chain 134 The Circumferentor 152 The Theodolite 2. Description of Instru- 3. To find the Latitude by the Meridian Al- titude of the Sun 315 4. Variation of the Com- 305 159 pass 918 The Semicircle 164 Mensuration of An- LIST OF TABLES ...
Σελίδα 88
... chains , yards , feet , & c . each part on the scale answering to one foot , one yard , & c . and the plan will be ... chain , or one yard , & c . then will the larger divisions be so 88 MATHEMATICAL.
... chains , yards , feet , & c . each part on the scale answering to one foot , one yard , & c . and the plan will be ... chain , or one yard , & c . then will the larger divisions be so 88 MATHEMATICAL.
Σελίδα 134
... chains and their re- spective links will differ also . The English statute - perch is 53 yards , the two- pole chain is 11 yards , and the four pole one is 22 yards ; hence the length of a link in a statute- chain is 7.92 inches . There ...
... chains and their re- spective links will differ also . The English statute - perch is 53 yards , the two- pole chain is 11 yards , and the four pole one is 22 yards ; hence the length of a link in a statute- chain is 7.92 inches . There ...
Σελίδα 135
... 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 , there is the figure ...
... 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 , there is the figure ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 38 - 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.
Σελίδα 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 197 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 106 - 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.
Σελίδα 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.