THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 5
... triangle , is made of three pieces or hori- zontal layers , and is two and - a - quarter inches thick and very strong . The three screws last mentioned have large milled heads , are quite stout , and play through the block from below by ...
... triangle , is made of three pieces or hori- zontal layers , and is two and - a - quarter inches thick and very strong . The three screws last mentioned have large milled heads , are quite stout , and play through the block from below by ...
Página 35
... triangle of er- ror , or two of them will be parallel , intersected by the third . The position of the true point ... triangle of error , the triangle formed by the three fixed points is called the great triangle , and the circle passing ...
... triangle of er- ror , or two of them will be parallel , intersected by the third . The position of the true point ... triangle of error , the triangle formed by the three fixed points is called the great triangle , and the circle passing ...
Página 36
... triangle , the true point is on the same side of the line from the middle point as the intersection of the lines from the other two points . ( Case 4. ) In case the point sought falls on the range of any two of the points , and the ...
... triangle , the true point is on the same side of the line from the middle point as the intersection of the lines from the other two points . ( Case 4. ) In case the point sought falls on the range of any two of the points , and the ...
Página 37
... triangle the true point is also without the triangle of error , and is situated to the right or left of it , according as the table is out of position to the left or right . CASE 2. ( Figure 2 , Plate No. 4 . ) - When the point sought ...
... triangle the true point is also without the triangle of error , and is situated to the right or left of it , according as the table is out of position to the left or right . CASE 2. ( Figure 2 , Plate No. 4 . ) - When the point sought ...
Página 38
... triangle of error formed by the three lines from A B and C is ab ac bc . The true point occupied lies at D , being at the intersection of the circles AB ab , AC ac , BC bc . Now , if perpendiculars be drawn from D to the lines drawn ...
... triangle of error formed by the three lines from A B and C is ab ac bc . The true point occupied lies at D , being at the intersection of the circles AB ab , AC ac , BC bc . Now , if perpendiculars be drawn from D to the lines drawn ...
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