## The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |

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Changing the scale Transit of Pole Star 176 263

Changing the scale Transit of Pole Star 176 263

**Difference**of Altitude of 7. Method of Dividing Pole Star and Pole 177 Land 271 Sun's Declination 178 8. Maritime Surveying 281 Reduction Table 182 The Protractor , 175 3. Page

Of OH - sets 250 Dip of the Horizon 175 3. Method of surveying Dip for Dif . Dist of land by Intersections 257 Semi - diameter of the Sun ibid 6. Changing the scale Transit of Pole Star 176 of Maps 263

Of OH - sets 250 Dip of the Horizon 175 3. Method of surveying Dip for Dif . Dist of land by Intersections 257 Semi - diameter of the Sun ibid 6. Changing the scale Transit of Pole Star 176 of Maps 263

**Difference**of ... Page 5

EXAMPLES From 38.765 take 35,3741 25.3741

EXAMPLES From 38.765 take 35,3741 25.3741

**Difference**= 13.3909 . From 2.4 take .8472 Diff . = 1.5528 From 71.45 take 8.4837248 .**Difference**= 62.9662752 . From .8472 DECIMAL FRACTIONS . 5. Page 6

**Difference**= 62.9662752 . From 84 take 82.3412 . Diff . = 1.6588 . MULTIPLICATION OF DECIMALS . Set the multiplier under the multiplicand without any regard to the situation of the decimal point ; and having multiplied as in whole ... Page 27

Then , because the sum of the logarithms of numbers , gives the logarithm of their product ; and the

Then , because the sum of the logarithms of numbers , gives the logarithm of their product ; and the

**difference**of the logarithms , gives the logarithm of the quotient of the numbers from the two preceding logarithms , and the logarithm ...### What people are saying - Write a review

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### Common terms and phrases

acres altitude angle Answer arch base bearing called centre chains chord circle Co-sec Co-sine Co-tang column compasses contained decimal degrees Dep Lat difference direct Dist distance divided divisions draw drawn east edge equal EXAMPLE extended feet figures fixed four fourth give given glass greater ground half hand height Hence Horizon inches laid land Lat Dep latitude length less logarithm manner marked measure meridian method minutes multiplied natural object observed opposite parallel perches perpendicular plane pole PROB proportion Quadrant quotient radius reduce remainder right angles right line root rule scale Secant sect side sights sine square station Sun's suppose survey taken Tang tangent theo third triangle true whole

### Popular passages

Page 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.

Page 25 - 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, &c.

Page 199 - RULE. From half the sum of the three sides subtract each side severally.

Page 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.

Page 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.