A Compendious System of Practical Surveying, and Dividing of Land: Concisely Defined, Methodically Arranged, and Fully Exemplified : the Whole Adapted for the Easy and Regular Instruction of Youth, in Our American SchoolsJohnson and Warner, 1814 - 227 σελίδες |
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Σελίδα 56
... observe the same rule as given in multipli- cation ; and when the Index figure of the divisor is greater than that of the dividend , 10 must be borrowed , as it was rejected in addition . Divide 4104 log . 3.61321 By 54 1.73239 Quotient ...
... observe the same rule as given in multipli- cation ; and when the Index figure of the divisor is greater than that of the dividend , 10 must be borrowed , as it was rejected in addition . Divide 4104 log . 3.61321 By 54 1.73239 Quotient ...
Σελίδα 59
... Observe , that the degrees at the top , and minutes in the left hand column , added to the degrees at the bot- tom , and minutes in the right hand column , always make 90 ° ; hence , if a sine be looked for , the co - sine or comple ...
... Observe , that the degrees at the top , and minutes in the left hand column , added to the degrees at the bot- tom , and minutes in the right hand column , always make 90 ° ; hence , if a sine be looked for , the co - sine or comple ...
Σελίδα 132
... observe , in taking out the difference of Latitude and Departure , to move the decimal point as many figures to the left , as are in the given decimal : and these last numbers , added to the former , will be those sought ; but if the ...
... observe , in taking out the difference of Latitude and Departure , to move the decimal point as many figures to the left , as are in the given decimal : and these last numbers , added to the former , will be those sought ; but if the ...
Σελίδα 134
... Observe , That in small surveys , if the difference amounts to 5 links for every station , there must have been some error com- . mitted in taking the survey ; and the best way to rectify it , will be by a re - survey on the ground , or ...
... Observe , That in small surveys , if the difference amounts to 5 links for every station , there must have been some error com- . mitted in taking the survey ; and the best way to rectify it , will be by a re - survey on the ground , or ...
Σελίδα 150
... 60 ° 07 ' 10.30256 11.08789 10.00000 To the distance HA 12.24 1.08789 Note . Observe the above proportion , in finding the bearing and distance of all lines required , as above B D ས S THE MAP . N E F 150 TO FIND THE CONTENT OF LAND .
... 60 ° 07 ' 10.30256 11.08789 10.00000 To the distance HA 12.24 1.08789 Note . Observe the above proportion , in finding the bearing and distance of all lines required , as above B D ས S THE MAP . N E F 150 TO FIND THE CONTENT OF LAND .
Άλλες εκδόσεις - Προβολή όλων
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Πλήρης προβολή - 1814 |
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Πλήρης προβολή - 1814 |
A Compendious System of Practical Surveying, and Dividing of Land: Concisely ... Zachariah Jess Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2023 |
Συχνά εμφανιζόμενοι όροι και φράσεις
180 degrees 40 perches ABCD acres angle opposite Artificial Sines base BC bearing and distance centre chains chord of 60 circle Co-sec Co-sine Co-tang Tang compasses decimal Deg Dist DegDegDeg describe an arch diameter diff difference of latitude divided division line double area East EXAMPLE extent will reach feet find the angles find the area find the bearing find the Content find the difference find the hypothenuse find the logarithm following figure foot half the sum hypothenuse 121 hypothenuse AC intersect latitude and departure left hand line of numbers line of sines Meridian Distance Multiply North Oblique Angled Trigonometry off-sets opposite angle parallelogram perpen perpendicular BC piece of ground PROBLEM quotient radius 90 Rhombus right angled triangle Right Angled Trigonometry RULE scale of equal Secant side BC South square perches square root Stations Bearings subtracted survey tangent Trapezium West
Δημοφιλή αποσπάσματα
Σελίδα 50 - ЙО, 30, &c., to the left hand, where it ends at 87 degrees. This line. with the line of equal parts, marked (EP), under it, are used together, and only in Mercator's Sailing. The upper line contains the degrees of the meridian, or latitude in a Mercator's chart, corresponding to the degrees of longitude on the lower line. The use of this Scale in solving the usual problems of Trigonometry...
Σελίδα 80 - To the length of the given side ; So is the sine of the angle opposite the required side. To the length of the required side.
Σελίδα 4 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Σελίδα 44 - I tenth part ; and the next 2, 2 tenth parts; and 10 at the end will be but one whole number or integer. As the figures are increased or diminished in their value, so in like manner must all the intermediate strokes or subdivisions be increased or diminished ; that is, if the first...
Σελίδα 47 - EXAMPLE. If the diameter of a circle be 7 inches, and the circumference 22, what is the circumference of another circle, the diameter of which is 14 inches ? Extend from 7 to 22, that extent will reach from 14 to 44 the same way.
Σελίδα 217 - Then if the true and magnetic amplitudes be both north or both south their difference is the variation, but if one be north and the other south their sum is the variation ; and to know whether it be easterly or westerly, suppose the observer looking towards that point of the compass representing the magnetic amplitude; then if the true amplitude be to the...
Σελίδα 220 - Ъои) on the east, or both on the west side of the meridian, their difference is the variation : but if one be on the east, and the other on the west side of the meridian, their sum is the variation ; and to know if it be east or west, suppose the observer looking towards that point of the compass representing the magnetic azimuth ; then if the true •azimuth be to the right of the magnetic, the variation is east, but if the true be to the left of the magnetic, the variation is west. EXAMPLE....
Σελίδα 215 - As the length of the whole line, Is to 57.3 Degrees,* So is the said distance, To the difference of Variation required. EXAMPLE. Suppose it be required to run a line which some years ago bore N.
Σελίδα 219 - . 2. Subtract the Sun's declination from 90«, when the latitude and declination are of the same name, or add it to 90*, when they are of contrary names ; and the sum, or remainder, will be the Sun's polar distance. , 3. Add together the Sun's polar distance, the latitude of the place, and the altitude of the Sun; take the difference between half their sum and the polar distance, and note the remainder.
Σελίδα 49 - ... degrees of the quadrant, begins at the right hand against 90° on the sines, and from thence is numbered towards the left hand thus : 10, 20...