A practical treatise on ... land and engineering surveying, Band 341863 |
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Seite 41
... move the two laths against the pins , and the pencil at C will describe the arc required . Example . It is required to describe an arc of fifty degrees on the given chord A B , subtract 25 degrees ( half the given angle ) from 180 ...
... move the two laths against the pins , and the pencil at C will describe the arc required . Example . It is required to describe an arc of fifty degrees on the given chord A B , subtract 25 degrees ( half the given angle ) from 180 ...
Seite 52
... moves on the conjugate axis ; now turn the beam , so as to lay over the conjugate axis CD , and make the pencil or point ... move round , will describe the ellipse . Problem 70 . To describe a parabola , any ordinate to the axe and its ...
... moves on the conjugate axis ; now turn the beam , so as to lay over the conjugate axis CD , and make the pencil or point ... move round , will describe the ellipse . Problem 70 . To describe a parabola , any ordinate to the axe and its ...
Seite 67
... move the upper part of the rule to 1 on the fence , with a fine needle fix it on the F 2 PRINCIPLES OF GEOMETRY . 67 angle Examples for practice The same To reduce crooked fences to a straight line by the parallel rule.
... move the upper part of the rule to 1 on the fence , with a fine needle fix it on the F 2 PRINCIPLES OF GEOMETRY . 67 angle Examples for practice The same To reduce crooked fences to a straight line by the parallel rule.
Seite 68
... move the rule to 3 on the fence line and fix the needle at 3 on B C ; bring the rule to the needle and at 5 on the fence line , move the rule to 4 on the fence and place the needle at 4 on B C ; bring the rule to 6 on the fence and ...
... move the rule to 3 on the fence line and fix the needle at 3 on B C ; bring the rule to the needle and at 5 on the fence line , move the rule to 4 on the fence and place the needle at 4 on B C ; bring the rule to 6 on the fence and ...
Seite 81
... move the arrow accordingly , until it is in the proper point of the line , and the chain fairly stretched out ; the arrow is then to be fixed in the ground , and the chain remain at rest until the surveyor has taken all the offset and ...
... move the arrow accordingly , until it is in the proper point of the line , and the chain fairly stretched out ; the arrow is then to be fixed in the ground , and the chain remain at rest until the surveyor has taken all the offset and ...
Andere Ausgaben - Alle anzeigen
A Practical Treatise on ... Land and Engineering Surveying Henry S. Merrett Keine Leseprobe verfügbar - 2015 |
A Practical Treatise On ... Land and Engineering Surveying Henry S Merrett Keine Leseprobe verfügbar - 2018 |
Häufige Begriffe und Wortgruppen
A B C acres adjustment base line bubble calculated centre chain lines chord circle circumference circumferentor collimation column compass correct cross sections cube yards curve datum line described diameter Diff difference Ditto divided divisions draw the line equal fence field-book fifth column figure find the area fixed flag fore sights frustrum given ground height horizontal inches and decimals inclosure instrument intersecting length line A B logarithm manner mark measure method minutes multiply needle object Offsets in inches parallel plate parallelogram pencil perpendicular plotted poles Problem protractor quantity quotient Radius in chains right angles roods Rule scale secant sector segment sextant side A B sine slopes spirit level square links staff station straight edge subtract surface survey surveyor TABLE take the angle tangent points telescope theodolite tie line tracing paper transverse distance trapezium triangle vernier vertical whole
Beliebte Passagen
Seite 102 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Seite 66 - ... the rail; multiply the length by the breadth and the product by the height; then divide the product by two, and you have the number of bushels of shelled corn in the crib.