 | Frederick Walter Simms - 1836 - 160 σελίδες
...form a staff seventeen feet long, jointed together, something after the manner of a fishing-rod: the whole length is divided into hundredths of a foot,...are continued the whole breadth, every half foot or five tenths being distinguished by a conspicuous black dot on each side. The whole contrivance is very... | |
 | Basil Jackson - 1847 - 410 σελίδες
...form a staff seventeen feet long, jointed together something after the manner of a fishing-rod : the whole length is divided into hundredths of a foot,...are continued the whole breadth, every half foot or five tenths being distinguished by a conspicuous black dot on each side. Let us now see how the difference... | |
 | Thomas Baker - 1850 - 244 σελίδες
...use, forms a staff 17 feet long, jointed together something after the manner of a fishing rod. The whole length is divided into hundredths of a foot,...are continued the whole breadth, every half foot or five tenths being distinguished by a conspicuous black dot on each side, the whole feet being numbered... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 σελίδες
...form a staff seventeen feet long, jointed together something after the manner of a fishing-rod. The whole length is divided into hundredths of a foot...half foot or five-tenths being distinguished by a conspicious black dot on each side. In all work where great accuracy is required, the Y level, above... | |
 | John Fry Heather - 1859 - 198 σελίδες
...form a staff seventeen feet long, jointed together something after the manner of a fishing-rod. The whole length is divided into hundredths of a foot,...described, is preferable to either of the others; but both Troughton's level and Gravatt's level are calculated, by their lightness, and by their being less liable... | |
 | Thomas Baker (C.E.) - 1865 - 174 σελίδες
...for use, form a staff 17 feet long, jointed together something after the manner of a fishing rod. The whole length is divided into hundredths of a foot,...distinguished by a conspicuous black dot on each side, the whole feet being numbered with the figures 1, 2, 3, &c. CORRECTION FOR CURVATURE. (7.) Let BDE... | |
 | John Fry Heather - 1866 - 228 σελίδες
...form a staff seventeen feet long, jointed together something after the manner of a fishing-rod. The whole length is divided into hundredths of a foot,...described, is preferable to either of the others ; but both Troughton's level and Gravatt's level are calculated, by their lightness, and by their being less liable... | |
 | Thomas Baker - 1891 - 262 σελίδες
...use, forms a staff 17 feet long, jointed together something after the manner of a fishing rod. The whole length is divided into hundredths of a foot,...are continued the whole breadth, every half foot or five tenths being distinguished by a conspicuous black dot on each side, the whole feet being numbered... | |
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The best constructed levelling staff* consists of three parts, which pack together for carriage in a neat manner, and, when opened out for use, form a staff seventeen feet long, jointed together something after the manner of a fishing-rod. The whole length... 