Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 22
... inches in length , two inches wide , and a fifth of an inch in thick- ness . It should be made of a hard material , perfectly straight and smooth . The hypothenuse of the right - angled triangle , which is length , and it is most ...
... inches in length , two inches wide , and a fifth of an inch in thick- ness . It should be made of a hard material , perfectly straight and smooth . The hypothenuse of the right - angled triangle , which is length , and it is most ...
Page 23
... inch , be divided into any number of equal parts , as 10 , the scale thus .1.2.3.4.5 .6 .7.8.9 10 a ab , which is divided ormed , is called a scale of ten parts to the inch . The line DESCRIPTION OF INSTRUMENTS . 23 Scale of Equal Parts,
... inch , be divided into any number of equal parts , as 10 , the scale thus .1.2.3.4.5 .6 .7.8.9 10 a ab , which is divided ormed , is called a scale of ten parts to the inch . The line DESCRIPTION OF INSTRUMENTS . 23 Scale of Equal Parts,
Page 24
... inch , or an exact part of an inch . unit of the scale , were half an inch , the scale would be one of 10 parts to half an inch , or of 20 parts to the inch . If it were required to take from the scale a line equal to two inches and six ...
... inch , or an exact part of an inch . unit of the scale , were half an inch , the scale would be one of 10 parts to half an inch , or of 20 parts to the inch . If it were required to take from the scale a line equal to two inches and six ...
Page 28
... inch on the paper , or by any part of an inch , take the inch , or part of the inch from the scale of inches on the sector : then , placing one foot of the dividers at 40 on one arm of the sector , open the sector until the other foot ...
... inch on the paper , or by any part of an inch , take the inch , or part of the inch from the scale of inches on the sector : then , placing one foot of the dividers at 40 on one arm of the sector , open the sector until the other foot ...
Page 30
... the unit of the scale . 33. Suppose that the given line were 75 feet in length , and it were required to draw it on paper , on a scale of 25 feet to The length of the line 75 feet , being divided the inch . 30 INTRODUCTION .
... the unit of the scale . 33. Suppose that the given line were 75 feet in length , and it were required to draw it on paper , on a scale of 25 feet to The length of the line 75 feet , being divided the inch . 30 INTRODUCTION .
Common terms and phrases
acres adjusted angle of elevation axis azimuth back-sights base line called centre clamp-screw coincide column comp compass Cosine D Cosine Sine Cotang course curve decimal degrees determined difference of level direction divided double meridian distance draw east elongation error example feet field notes figure given angle given line given point ground Gunter's chain half hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection latitude and departure length levelling screws line AC line of collimation logarithm M.
M. Sine marked measure method multiplied natural sines needle object paper parallel passing perpendicular piece of land pins plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side similar triangles spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards