 ... two seconds. The observer at the instrument is provided with a telegraph key, which may also be put in the circuit with the chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing...  Manual of Topographic Methods - Seite 15von Henry Gannett - 1906 - 88 SeitenVollansicht - Über dieses Buch
 | Maryland Geological Survey - 1898 - 628 Seiten
...TELESCOPE. chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...chronograph along with the record of the chronometer. FIELD WORK. Since the observations for latitude and longitude, though different, are made with the... | |
 | Maryland Geological Survey - 1898 - 626 Seiten
...TELESCOPE. chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...chronograph along with the record of the chronometer. FIELD WOKK. Since the observations for latitude and longitude, though different, are made with the... | |
 | Maryland Geological Survey - 1898 - 630 Seiten
...TELESCOPE. chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...chronograph along with the record of the chronometer. FIELD WORK. Since the observations for latitude and longitude, though different, are made with the... | |
 | Maryland Geological Survey - 1898 - 646 Seiten
...TELESCOPE. chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...chronograph along with the record of the chronometer. FIELD WORK. Since the observations for latitude and longitude, though different, are made with the... | |
 | Maryland Geological Survey - 1898 - 628 Seiten
...TKLESCOPE. chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...chronograph along with the record of the chronometer. FIELD WORK. Since the observations for latitude and longitude, though different, are made with the... | |
 | 1907 - 874 Seiten
...the chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which makes a record upon the clironograph along with the record of the chronometer. An illustration of the form of chronograph in... | |
 | Henry Gannett - 1906 - 644 Seiten
...chronometer and chronograph, and as a star \ I near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...the same instrument, at the same time, and by the same party, certain parts of the work apply equally to both determinations and may be described once... | |
 | Geological Survey (U.S.) - 1906 - 126 Seiten
...the chronometer and chronograph, and as a star near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...the same instrument, at the same time, and by the same party, certain parts of the work apply equally to both determinations and may be described once... | |
 | Geological Survey (U.S.) - 1893 - 390 Seiten
...chronograph, and as a star ; 7 Flo. 2.— Chronograph. near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...An illustration of the form of chronograph in use upon the Geological Survey is shown upon Fig. 2. FIELD WORK. In the selection of a station, care must... | |
 | 1895 - 380 Seiten
...chronograph, and as a star Flo. 2.— Chronograph. near the meridian crosses a thread in the telescope he records that fact by pressing on the key, which...An illustration of the form of chronograph in use upon the Geological Survey is shown upon Fig. 2. FIELD WORK. Since the observations for latitude and... | |
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