The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |
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Page 2
... inch , yard , & c . or of whatever the whole thing originally consisted : the 4 and the 8 are the denominators , showing into how many equal parts the unit is divided ; and the three and the five are the numerators , showing how many of ...
... inch , yard , & c . or of whatever the whole thing originally consisted : the 4 and the 8 are the denominators , showing into how many equal parts the unit is divided ; and the three and the five are the numerators , showing how many of ...
Page 11
... inches to the Decimal of a foot . The foot being equal to 12 inches , the vulgar DECIMAL FRACTIONS . 11.
... inches to the Decimal of a foot . The foot being equal to 12 inches , the vulgar DECIMAL FRACTIONS . 11.
Page 12
... inches , the vulgar fraction will be ; then 12 ) 9.00 .75 decimal frac- [ tion required . Reduce 8 inches to the decimal of a yard . 8 inches . 1 yard × 3 × 12 = 36 inches . 36 ) 8.0 ( .22+ = Answer . 72 80 72 | 8 Reduce 5 furlongs 12 ...
... inches , the vulgar fraction will be ; then 12 ) 9.00 .75 decimal frac- [ tion required . Reduce 8 inches to the decimal of a yard . 8 inches . 1 yard × 3 × 12 = 36 inches . 36 ) 8.0 ( .22+ = Answer . 72 80 72 | 8 Reduce 5 furlongs 12 ...
Page 14
... inches [ in a foot . .7500 12 number of lines in 9.0000 [ an inch . The answer here is 2 feet 9 lines . What is the value of .084 of a furlong ? per . 1 yd . 2 ft . 11 in . Ans . 3 What is the value of .683 of a degree ? Ans . 40 m . 58 ...
... inches [ in a foot . .7500 12 number of lines in 9.0000 [ an inch . The answer here is 2 feet 9 lines . What is the value of .084 of a furlong ? per . 1 yd . 2 ft . 11 in . Ans . 3 What is the value of .683 of a degree ? Ans . 40 m . 58 ...
Page 75
... inch compasses with a moveable leg , an ink point , a dotting point , the crayon point , so contrived as to hold . a whole pencil , two additional pieces to lengthen occasionally . one leg of the compasses , and thereby enable them to ...
... inch compasses with a moveable leg , an ink point , a dotting point , the crayon point , so contrived as to hold . a whole pencil , two additional pieces to lengthen occasionally . one leg of the compasses , and thereby enable them to ...
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Common terms and phrases
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
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 197 - 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.