The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 28.
Σελίδα 93
... edge is the di- ameter of the semicircle , and the mark in the mid- dle points out the centre , in a protractor in the form of a parallelogram : the divisions are as in the semicircular one , numbered both ways ; the blank side ...
... edge is the di- ameter of the semicircle , and the mark in the mid- dle points out the centre , in a protractor in the form of a parallelogram : the divisions are as in the semicircular one , numbered both ways ; the blank side ...
Σελίδα 94
... edge , or diameter , ex- actly upon the line ; then the degree upon the limb that is cut by the line will be the measure of the given angle , which , in the present instance , is found to be 60 degrees . 3. From a given point in a line ...
... edge , or diameter , ex- actly upon the line ; then the degree upon the limb that is cut by the line will be the measure of the given angle , which , in the present instance , is found to be 60 degrees . 3. From a given point in a line ...
Σελίδα 165
... degree are two numbers , one the number of degrees , the other its complement to 360 . There is another centre hole about of the table's breadth from one edge , and is in the mid- dle between the two ends . To this centre hole F ( 165 )
... degree are two numbers , one the number of degrees , the other its complement to 360 . There is another centre hole about of the table's breadth from one edge , and is in the mid- dle between the two ends . To this centre hole F ( 165 )
Σελίδα 166
... edge , at each end of which is a sight ; on the ruler are scales of equal parts , with and without diagonals , and a ... edge of the index , so as through the sights you may see the object in the last sta- tion , and by the edge of the ...
... edge , at each end of which is a sight ; on the ruler are scales of equal parts , with and without diagonals , and a ... edge of the index , so as through the sights you may see the object in the last sta- tion , and by the edge of the ...
Σελίδα 167
... edge of the index to the second station , direct your sights to the next ; draw a line by the edge of the index , and lay off the next line ; and pro- ceed through the whole without using the needle , as you do with the theodolite . If ...
... edge of the index to the second station , direct your sights to the next ; draw a line by the edge of the index , and lay off the next line ; and pro- ceed through the whole without using the needle , as you do with the theodolite . If ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal Dep Lat Dep difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied Natural Co-sines natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle Sextant side sights square root station stationary distance subtracted survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry vane versed sine vulgar fraction