 | Frederick Walter Simms - 1834 - 124 pages
...inventor, Mr. TROUGHTON, contained in a paper which he calls " Directions for observing with Troughton's Reflecting Circle. " Prepare the instrument for observation...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | Frederick Walter Simms - 1834 - 134 pages
...contained in a paper which he calls " Directions for observing with Troughton's Reflecting Circle. parallel to the plane, exactly as you do with a sextant...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | Frederick Walter Simms - 1836 - 160 pages
...TROUGHTON, contained in a paper which he calls " Directions for observing with Troughton's Reflectiny Circle. " Prepare the instrument for observation by...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | John F. Heather - 1849 - 208 pages
...explained by the inventor, Mr. Troughton, as follows : — Directions for Observing uitli Troughton-s Reflecting Circle. — " Prepare the instrument for...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 pages
...inventor, Mr. TROUGHTON, contained in a paper which he calls " Directions for observing with Troughton's Reflecting Circle. " Prepare the instrument for observation...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | John Fry Heather - 1859 - 198 pages
...explained by the inventor, Mr. Troughton, as follows : — Directions for observing wiIh Troughtoris Reflecting Circle. — "Prepare the instrument for...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | 1860 - 936 pages
...are explained by the inventor, Mr. Troughton, as follows : Directions for observing w/h Troughton' s reflecting circle. — "Prepare the instrument for...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | John Fry Heather - 1866 - 228 pages
...explained by the inventor, Mr. Troughton, as follows : — Directions for observing with Troughtoris Reflecting Circle, — " Prepare the instrument for...short handle, direct the telescope to the fainter object, and make the contact in the usual way. Now read off the degree, minute, and second, by that... | |
 | John Fry Heather - 1874 - 220 pages
...explained by the inventor, Mr. Troughton, as follows : — Directiont for observing wiUt, Troughton't Reflecting Circle. — " Prepare the instrument for...set the index forwards to the rough distance of the Bun and moon, or moon and star; and, holding the circle by the short handle, direct the telescope to... | |
 | 1835 - 596 pages
...for observing with his beautiful and powerful Reflecting Circle, in the words of the inventor : — " Prepare the instrument for observation by screwing...the index forwards to the rough distance of the sun or moon, or moon and stars, and holding the circle by the short handle, direct the telescope to the... | |
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Prepare the instrument for observation by screwing the telescope into its place, adjusting the drawer to focus, and the wires parallel to the plane, exactly as you do with a sextant : also set the index forwards to the rough distance of the sun and moon,... 