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" Field work and protraction are truly taken and performed ; if not, an error must have been committed in one of them : In such cases make a second protraction ; if this agrees with the former, it is to be presumed the fault is in the Field work ; a re-survey... "
A System of Geometry and Trigonometry: Together with a Treatise on Surveying ... - Seite 40
von Abel Flint - 1804 - 168 Seiten
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A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1806 - 452 Seiten
...protractions, if the end of the last station falls exactly in the point you began at, the fieldwork and protraction are truly taken and performed, if...must have been committed in one of them : in such case make a second protraction : if this agrees with the former, and neither meet nor close, the fault...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1808 - 168 Seiten
...Field as before taught: Proceed in the same manner to draw parallel Lines and layoff the several Sdes till the whole is protracted. In protracting a Field,...to be presumed the fault is in the Field work ; a re-survey must then be taken. EXAMPLE I. FIELD BOOK. See PLATE H. Fig. 53. * A Compass may be so constructed...
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A Treatise of Practical Surveying, ...

Robert Gibson - 1808 - 440 Seiten
...protractions, if the end of the last station falls exactly in the point you began at, the fieldwork and protraction are truly taken, and performed ; if...must have been committed in one of them ; in such case make a second protraction ; if this agrees with the former, and neither meet or close, the fault...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1811 - 508 Seiten
...protractions, if the end of the last station falls exactly in the point you began at, the fieldwork and protraction are truly taken, and performed ; if...must have been committed in one of them : in such case make a second protraction ; if this agrees with the former, and neither meet nor close, the fault...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1814 - 508 Seiten
...protractions, if the end of the last station falls exactly in the point you began at, the fieldwork and protraction are truly taken, and performed ; if...must have been committed in one of them : in such case make a second protraction; if this agrees with the former, and neither meet nor close, the fault...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1818 - 168 Seiten
...East . r West ; and from the upper or lower part of the Line, according as it is North or South. hi all protractions, if the end of the last distance...cases make a second protraction ; if this agrees with ihe former, it is to be presumed the fault is in the Field work ; a re-survey must then be taken. EXAMPLE...
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A Treatise on Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1818 - 478 Seiten
...protractions, if the end of the last station falls exactly in the point you began at, the field-work and protraction are truly taken, and performed ; if...must have been committed in one of them ; in such case make a second protraction : if this agrees with the former, and neither meet or close, the fault...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1821 - 544 Seiten
...falls exactly in the point you began at, the fieldAvork and protraction are truly taken.and peiformed ; if not, an error must have been committed in one of them.: in such case make a second protraction; if this agrees with the former, and neither meet nor close, the fault...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1825 - 241 Seiten
...the Course to the right or left of the Meridian Line, according as it is East or West, and from ethe upper or lower part of the Line, according as it is...not, an error must have been committed in one of them 1 in such cases, make a second protraction ; if this agrees with the former, it is to be presumed the...
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A System of Geometry and Trigonometry: With a Treatise on Surveying ... in ...

Abel Flint - 1830 - 284 Seiten
...exactly on the point from which you began, the course also being right, the field work and protractions are truly taken and performed ; if not, an error must...to be presumed the fault is in the field work ; a re-survey must then be taken. * A compass may be so constructed with two indexes, one moveable and...
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