 | Colin Macfarquhar, George Gleig - Encyclopedias and dictionaries - 1797 - 442 pages
...bieadth of the fector when open. The real inventor of this valuable indrument ¡e unknown ; yet of fo much merit has the invention appeared, that it was claimed by Galileo, and difputed by nations. The feftot is founded on the fourth proposition ef the fixth book of Euclid ;... | |
 | Encyclopaedia Britannica - 1810 - 824 pages
...breadth of the leclor when open. The real inventor of this valuable infiniment is unknown ; yet of fo much merit has the invention appeared, that it was claimed by Galileo, and difputed by nations. The feélor is founded on the fourth proportion of the fixth book of Euclid ;... | |
 | Robert Gibson - Surveying - 1811 - 580 pages
...compass, which are the only means that geometry makes use of for measuring, whether in spe ulation or practice. The real inventor of this valuable instrument...invention appeared, that it was claimed by Galileo, und disputed by nations. This instrument derives its name from the tenth definition of the third book... | |
 | Robert Gibson - Surveying - 1814 - 558 pages
...drawing, there is none so extensive in its use, or of such general application, as the sector. It is an universal scale, uniting, as it were, angles and parallel...sector of a circle. It is formed of two equal rules called legs ; these legs are moveable about the centre of a joint, and will, consequently, by their... | |
 | Encyclopedias and dictionaries - 1816 - 762 pages
...breadth of the fector when open. The real inventor of this valuable inftrument is unknown ; yet of fo much merit has the invention appeared, that it was claimed by Galileo, and difputed by nations. The fector is founded on the 4th propofition of the 6th book of Euclid ; where... | |
 | Robert Gibson - Surveying - 1821 - 594 pages
...drawing, there is none so extensive in its use, or of such general application, as the sector. lt is an universal scale; uniting, as it were, angles and parallel...of Euclid, where he defines the sector of a circle. lt is formed of two equal rules called legs ; these legs are moveable about the centre of a joint,... | |
 | Encyclopedias and dictionaries - 1823 - 936 pages
...sector when open. The real inventor of this valuable instrument ¡ - unknown •, yet of so much UK rit has the invention appeared, that it was claimed by Galileo, and disputed by nations. The sector is founded on the fourth proposition of ••the sixth book of Euclid ; where it is demonstrated,... | |
 | Robert Gibson, James Ryan - Surveying - 1839 - 452 pages
...uniting, as it were, angles and parallel lines, din rule and the compass, which are the only means thai geometry makes use of for measuring, whether in speculation...sector of a circle. It is formed of two equal rules called legs ; these legs are moveable about the centre of a joint, and will, consequently, by their... | |
 | John Quested - Geometry - 1848 - 100 pages
...mathematical instrument containing various scales, and movable on a pivot, so as to fit all radii. The real inventor of this valuable instrument is unknown;...it was claimed by Galileo, and disputed by nations. For a minute description of it, see KENTISH'S " TREATISE ON A BOX OF INSTRUMENTS AND THE SLIDE RULE."... | |
 | Henry S. Merrett - 1863 - 428 pages
...rule and the compasses, which are the only means used in geometry for measuring, whether in theory or practice. The real inventor of this valuable instrument...sector of a circle. It is formed of two equal rules, called legs. These legs are movable about the centre, С, of a joint, d ef, and will, consequently,... | |
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... or practice. The real inventor of this valuable instrument is unknown ; yet of so much merit has the invention appeared, that it was claimed by Galileo, and disputed by nations. This instrument derives its name from the tenth definition of the third... 