 | United States. Hydrographic Office - 1916 - 576 Seiten
...on the charts for the purpose of facilitating the plotting become in time slightly in error, and in some cases, such as with small scales or when the...the change has been considerable. The compasses are reengraved once in ten years; more frequent alterations on one spot in a copperplate would not be practicable.... | |
 | United States. Hydrographic Office - 1916 - 608 Seiten
...on the charts for the purpose of facilitating the plotting become in time slightly in error, and in some cases, such as with small scales or when the...the change has been considerable. The compasses are reengraved once in ten years ; more frequent alterations on one spot in a copperplate would not be... | |
 | United States. Hydrographic Office - 1916 - 322 Seiten
...on the charts for the purpose of facilitating the plotting become in time slightly in error, and in some cases, such as with small scales or when the...the change has been considerable. The compasses are reengraved once in ten years; more frequent alterations on one spot in a copperplate would not be practicable.... | |
 | United States. Hydrographic Office - 1916 - 516 Seiten
...on the charts for the purpose of facilitating the plotting become in time slightly in error, and in some cases, such as with small scales or when the...the change has been considerable. The compasses are reengraved once in ten years; more frequent alterations on one spot in a copperplate would not be practicable.... | |
 | U.S. Coast and Geodetic Survey - 1916 - 318 Seiten
...placed on the charts for the purpose of facilitating plotting become in time slightly in error, and in some cases, such as with small scales, or when the...from neglect of this change may be of importance. The compasses are reengraved for every new edition if the error is appreciable. Means for determining the... | |
 | 1916 - 188 Seiten
...placed on the charts for the purpose of facilitating plotting become in time slightly in error, and in some cases, such as with small scales, or when the...from neglect of this change may be of importance. The compasses are reengraved for every new edition if the error is appreciable. Means for determining the... | |
 | U.S. Coast and Geodetic Survey - 1947 - 404 Seiten
...in variation gradually introduces an error in magnetic compass roses on charts, and in some cases, the displacement of position from neglect of this change may be of importance. The compass roses are jeplotted for every new edition of the chart if the error is appreciable; and the... | |
 | United States. Hydrographic Office - 1917 - 606 Seiten
...on the charts for the purpose of facilitating the plotting become in time slightly in error, and in some cases, such as with small scales or when the...the change has been considerable. The compasses are reengraved oivce in ten years; more frequent alterations on one spot in a copperplate would not be... | |
 | United States. Hydrographic Office - 1918 - 438 Seiten
...on the charts for the purpose of facilitating the plotting become hi time slightly in error, and in some cases, such as with small scales or when the...the change has been considerable. The compasses are reengraved once hi ten years; more frequent alterations on one spot in a copperplate would not be practicable.... | |
 | United States. Hydrographic Office - 1919 - 702 Seiten
...courses and bearings from the magnetic compass roses, which become in time slightly in error, and in some cases, such as with small scales or when the...corrections when the change has been considerable. It is better to reduce all magnetic bearings and courses to true and then use the true compass rose.... | |
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The magnetic compasses placed on the charts for the purpose of facilitating the plotting become in time slightly in error, and in some cases, such as with small scales or when the lines are long, the displacement of position from neglect of this change... 
