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" required for use, is filled with water (colored with lake or indigo), till it nearly reaches to the necks of the bottles, which are then corked for the convenience of carriage. On setting the stand tolerably level by the eye, these corks are both withdrawn "
Outline of the Method of Conducting a Trigonometrical Survey, for the ... - Page 71
by Edward Charles Frome - 1850 - 253 pages
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A Treatise on Mathematical Instruments ...

John Fry Heather - 1849 - 202 pages
...revolve on any light portable stand. The tube, when required for use, is filled with water (coloured with lake or indigo), till it nearly reaches to the...level by the eye, these corks are both withdrawn, which must be done carefully, and when the tube is nearly level, or the water will be ejected with...
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A Treatise on Mathematical Instruments: Including Most of the Instruments ...

John Fry Heather - 1851 - 208 pages
...revolve on any light portable stand. The tube, when required for use, is filled with water (coloured with lake or indigo), till it nearly reaches to the...level by the eye, these corks are both withdrawn, which must be done carefully, and when the tube is nearly level, or the water will be ejected with...
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A Treatise on Military Surveying: Including Sketching in the Field, Plan ...

Basil Jackson - 1853 - 420 pages
...revolve on any light portable stand. The tube, when required for use, is filled with water (coloured with lake or indigo), till it nearly reaches to the...level by the eye, these corks are both withdrawn, which must be done carefully and when the tube is nearly level, or the water will be ejected with violence;...
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A Treatise on Mathematical Instruments: Including Most of the Instruments ...

John Fry Heather - 1853 - 340 pages
...revolve on any light portable stand. The tube, when required for use, is filled with water (coloured with lake or indigo), till it nearly reaches to the...level by the eye, these corks are both withdrawn, which must be done carefully, and when the tube is nearly level, or the water will be ejected with...
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Elements of Surveying, and Navigation: With Descriptions of the Instruments ...

Charles Davies - 1854 - 446 pages
...projecting axis g works in a hollow cylinder h, which forms the top of a stand. The tube, when the level is required for use, is filled with water (colored with lake or indigo), till it nearly reaches the necks of the bottles. After placing the stand tolerably level by the eye, withdraw both corks,...
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Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - 1855 - 628 pages
...projecting axis works in a hollow cylinder which forms the top of a stand. The tube, when the instrument is required for use, is filled with water (colored with lake or indigo), till it nearly reaches the necks of the bottles. After placing the stand tolerably level by the eye, withdraw both c«rks....
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Mathematical Dictionary and Cyclopedia of Mathematical Science Comprising ...

Charles Davies, William Guy Peck - 1859 - 622 pages
...projecting axis works in a hollow cylinder which forms the top of ft stand. The tube, when the instrument is required for use, is filled with water (colored with lake or indigo), till it nearly reaches the necks of the bottles. After placing the stand tolerably level by the eye. withdraw both corks,...
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Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - 1865 - 592 pages
...projecting axis works in a hollow cylinder which forms the top of a stand. The tube, when the instrument is required for use, is filled with water (colored with lake or indigo), till it nearly reaches the necks of the bottles. After placing the stand tolerably level by the eye, withdraw both c»rks....
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Outline of the method of conducting a trigonometrical survey, for the ...

Edward C. Frome - 1873 - 446 pages
...revolve on any light portable stand. The tube, when required for use, is filled with water (coloured with lake or indigo), till it nearly reaches to the necks of the bottles. In the level generally in use the bottles are corked for the convenience of carriage, and have to be...
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A Treatise on Mathematical Instruments: Their Construction, Adjustment ...

John Fry Heather - 1874 - 220 pages
...revolve on any light portable stand. The tube, when required for use, is filled with water (coloured with lake or indigo), till it nearly reaches to the...level by the eye, these corks are both withdrawn, which must be done carefully, and when the tube is nearly level, or the water will be ejected with...
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