The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 páginas |
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Página 4
... Chains and Measures used in Great Britain and Ireland , Methods of Sur- veying and of taking inaccessible distances by the Chain only , with some necessary Problems ; also a particular description of the several instruments used in ...
... Chains and Measures used in Great Britain and Ireland , Methods of Sur- veying and of taking inaccessible distances by the Chain only , with some necessary Problems ; also a particular description of the several instruments used in ...
Página 7
... Chain 8. Maritime Surveying 220 9. Levelling - Promiscuous Ques- PART III . Sect . 1. Introductory Princi- 2 . The Semi - Circle Mensuration of An- 121 · 124 gles by these In- struments - The Protractor 2. Mensuration of heights - Of ...
... Chain 8. Maritime Surveying 220 9. Levelling - Promiscuous Ques- PART III . Sect . 1. Introductory Princi- 2 . The Semi - Circle Mensuration of An- 121 · 124 gles by these In- struments - The Protractor 2. Mensuration of heights - Of ...
Página 70
... chains , yards , feet , & c . each part on the scale answering to one foot , one yard , & c . and the plan will be larger or smaller , as the scale contains a smaller or a greater num- ber of parts in an inch . Hence a variety of scales ...
... chains , yards , feet , & c . each part on the scale answering to one foot , one yard , & c . and the plan will be larger or smaller , as the scale contains a smaller or a greater num- ber of parts in an inch . Hence a variety of scales ...
Página 71
... chain , or one yard , & c . then will the larger divisions be so many tens ; but if the subdivisions are supposed to be tens , the larger divisions will be hundreds . 36 To illustrate this , suppose it were required to set off from ...
... chain , or one yard , & c . then will the larger divisions be so many tens ; but if the subdivisions are supposed to be tens , the larger divisions will be hundreds . 36 To illustrate this , suppose it were required to set off from ...
Página 92
... chains , the perpendicular BC 980 chains Ans . To find the angles and base . Ex . 6. In the right - angled triangle ABC . LA 54 ° 51 ' LC 35 ° 9 AB 690 Given , { the base AB'735.9 links , the per- Ans . pendicular BC 320 LC 66 ° 30 ' LA ...
... chains , the perpendicular BC 980 chains Ans . To find the angles and base . Ex . 6. In the right - angled triangle ABC . LA 54 ° 51 ' LC 35 ° 9 AB 690 Given , { the base AB'735.9 links , the per- Ans . pendicular BC 320 LC 66 ° 30 ' LA ...
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Términos y frases comunes
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