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" Ten arrows must be provided with the chain, about 12 inches long, pointed at one end, so as to be easily pressed into the ground, and turned at the other end, so as to form a ring, to serve for a handle. In using the chain marks are first to be set up... "
A Treatise on Mathematical Instruments: Including Most of the Instruments ... - Página 93
por John Fry Heather - 1859 - 170 páginas
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 1046 páginas
...measured, if there be not some object, as a tree, a house, &c. in that direction. The leader takes the ten arrows in his left hand, and one end of the chain by the ring, in his right hand, and proceeds towards the stationstaff, or other object. The follower...
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A Treatise on Mathematical Instruments: Including Most of the Instruments ...

John F. Heather - 1849 - 208 páginas
...100,000 43,560 4,840 160 10 4 1 Sq. Mile. 64,000,000 2,787,400 3,097,600 102,400J6,400 |2,560 640 1 Ten arrows must be provided with the chain, about...line to be measured, directs the leader to extend the chain in the direction of this mark. The leader then puts down one of his arrows, and proceeds a second...
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The Practice of Engineering Field Work, Applied to Land, Hydrographic, and ...

W. Davis Haskoll - 1858 - 422 páginas
...the "follower," and in the manner now to be described. The leader starts in the direction required with the ten arrows in his left hand, and one end of the chain in his right, the follower remaining at the starting point, there holding the other chain end. . Having dragged out...
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Elementary Treatise on Land Surveying and Levelling ...

Robert Thornton (Engineer.) - 1863 - 144 páginas
...with red flags) are set up at the ends of the line to be measured, as well .as at intermediate points. Two persons are then required to perform the measurement. The chain leader starts with the ten arrows in one hand and one end of the chain in the other, while the follower remains at the starting point, who,...
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A Practical Course of Military Surveying: Including the Principles of ...

Auguste Frédéric Lendy - 1864 - 254 páginas
...persons, the leader and the follower, are required to take the measure. The leader starts with the arrows in his left hand, and one end of the chain in his right, while'the follower, remaining at the point of starting, directs the leader in the proper line and makes...
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Rudimentary treatise on mensuration and measuring

Thomas Baker (C.E.) - 1865 - 174 páginas
...account of hills, woods, hedges, or other obstructions. Two persons are then required by the surveyor to perform the measurement. The chain leader starts...while the follower remains at the starting point, who, looking at the staff or staves, that mark the line to be measured, directs the leader to extend...
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Treatise on Mathematical Instruments: Their Construction, Adjustment ...

John Fry Heather - 1866 - 228 páginas
...the other end, so as to form a ring to serve for a handle. In using the chain marks are first to he set up at the extremities of the line to be measured....line to be measured, directs the leader to extend the 3-22500 40 Sq. Link*. Sq. Feet. Sq. Yards. lorq'pmh' 625 2721 30J 1 Sq. Ch. 10,000 4,856 484 16 1 Hoods....
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A Practical Course of Military Surveying: Including the Principles of ...

Auguste Frédéric Lendy - 1869 - 328 páginas
...persons, the leader and the follower, are required to take the measure. The leader starts with the arrows in his left hand, and one end of the chain in his right, while the follower, remaining at the point of starting, directs the leader in the proper line and makes him stretch the...
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A Treatise on Mathematical Instruments: Their Construction, Adjustment ...

John Fry Heather - 1874 - 220 páginas
...13-80625 acres. Then -80625 acres is equivalent to -80625 x 4, or 3'22500 roods; and, again, -22500 900000 roods is equivalent to -22500 x 40, or 9-00000 poles....line to be measured, directs the leader to extend the 3-22500 40 Sq. Links. 625 Sq. Feet. 272^ Sq. Yards, l^p™^ 30J 1 Sq. Ch.1 . 10,000 4,356 484 16 1...
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Mathematical Instruments: Their Construction, Adjustment, Testing and Use ...

John Fry Heather - 1884 - 566 páginas
...the other end, so as to form a ring, to serve for a handle by which they may be hung on the finger. In using the chain, marks are first to be set up at...chain in his right, while the follower remains at the startingp.iint, and, looking at the mark or staff at the other extremity of the line to be measured,...
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