 | John Fry Heather - 1849 - 202 pages
...other on a piece of plate glass, which enables the person using it to place it so that the center, or intersection of the cross lines, may coincide with...pricking points with each other would pass through the center of the instrument, as denoted by the before-mentioned intersection of the cross-lines upon the... | |
 | Sir Henry Edward Landor Thuillier - Surveying - 1851 - 826 pages
...which enables the person using it to place it so that the centre, or intersection of the cross-lines, may coincide with any given point on the plan. If...denoted by the before-mentioned intersection of the cross-lines upon the glass, which it may be observed, are drawn so nearly level with the under surface... | |
 | William Ezra Worthen - Architectural drawing - 1857 - 632 pages
...branch ee, carrying at their extremities a fine steel pricker, whose points are kept above the surfa«o of the paper by springs placed under their supports,...before-mentioned intersection of the cross lines upon the glass. In using this instrument, the vernier should first be set to zero (or the division marked 360) on the... | |
 | W.E. WORTHEN - 1857 - 600 pages
...points to make the necessary punctures in the paper. The branches ee are attached to the bars c 0, with a joint which admits of their being folded backwards...before-mentioned intersection of the cross lines upon the glass. In using this instrument, the vernier should first be set to zero (or the division marked 360) on the... | |
 | William Ezra Worthen - Architectural drawing - 1857 - 650 pages
...enables the person using it to place it, so that the centre, or intersection of the cross lines, ms^ coincide with any given point on the plan. If the...before-mentioned intersection of the cross lines upon the glass. In using this instrument, the vernier should first be set to zero (or the division marked 360) on the... | |
 | John Fry Heather - Angles (Geometry) - 1859 - 198 pages
...other on a piece of plate glass, which enables the person using it to place it so that the center, or intersection of the cross lines, may coincide with...pricking points with each other would pass through the center of the instrument, as denoted by the before-mentioned intersection of the cross-lines upon the... | |
 | Thomas Baker (Civil engineer) - 1865 - 278 pages
...with any given point on the plan. If the instrument is in correct order, a line connecting the line pricking points with each other would pass through the centre of the instrument, as shewn by the intersection of the cross lines on the glass ; which it may be observed, are drawn so... | |
 | John Fry Heather - Mathematical instruments - 1866 - 228 pages
...other on a piece of plate glass, which enables the person using it to place it so that the center, or intersection of the cross lines, may coincide with...pricking points with each other would pass through the center of the instrument, as denoted by the before-mentioned intersection of the cross-lines upon the... | |
 | Edward Spon, Oliver Byrne, Ernest Spon, Francis N. Spon - Engineering - 1874 - 460 pages
...во that tl.e centre, or intersection of the cross lines, may coincide with nny given point on tliC plan. If the instrument is in correct order, a line...before-mentioned intersection of the cross lines upon the gloss, which, it may bo observed, are drawn so nearly level witli the under surface, of the instrument... | |
 | Spon E. & F.N., ltd - 1874 - 464 pages
...tlio person using it to place it so that the centre, or intersection of the cross lines, may coincido with any given point on the plan. If the instrument...through the centre of the instrument, as denoted by tho before-mentioned intersection of the cross lines upon the glass, which, it may be observed, are... | |
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The centre of the instrument is represented by the intersection of two lines drawn at right angles to each other on a piece of plate glass, which enables the person using it to place it, so that the centre, or intersection of the cross lines, may coincide... 
