A Treatise on Levelling, Topography, and Higher Surveying (Google eBook)

Front Cover
D. Appleton, 1870 - Geodesy - 171 pages
0 Reviews
  

What people are saying - Write a review

We haven't found any reviews in the usual places.

Contents

ContinnouB Waterlevels
10
Visual Waterlevels
11
The Spiritlevel
12
Blocklevel
13
Level with Sights
14
The Telescope Level
15
The Y Level
16
The Crosshairs
17
Supports
18
First Adjustment
19
Second Adjustment
20
Centring the Objectglass and Eyepiece
21
Adjustment by the Peg Method
22
Verification by another Telescope
23
Gravatts Level
24
Tripods
25
Target
26
Verniers
27
Speaking Rods
28
ABT PAGE 52 Field Routine
30
Fieldnotes 82
32
First Form of Fieldbook
33
Second Form of Fieldbook
35
Third Form of Fieldbook
38
Best Length of Sight
39
Benchmarks
40
Limits of Precision
41
Crosslevels
42
Steep Slopes
43
When the Rod is too low
45
Levelling across Water
46
Through a House
47
Wind
48
LEVELLING LOCATION 81 Its Nature
49
Staking out Work
50
To Locate a Level Line
51
To run a Grade Line
52
abt PAGE 87 Vertical Surveying
53
Vertical Angles
54
Instruments
55
Slopes
56
Adjustments
58
FieldWork
60
Angular Profiles
61
Burniers Level
62
CHAPTER n SIMPLE ANGULAR LEVELLING A For Short Distances 98 Principle
63
B For Greater Distances 100 Correction for Curvature
64
Correction for Refraction
65
Correction for Refraction
66
Reciprocal Observation for cancelling Refraction
67
When the Height of the Signal cannot he Measured
68
Levelling by the Horizon of the Sea
69
By Angular Coordinates in one Plane
70
By Angular Coordinates in several Planes
71
AST PAGB 113 Principles
73
Correction for Temperature of the Mercury
74
Eules for calculating Heights
75
To Correct for Latitude
76
French Formulas
77
Babinets Formula
78
CHAPTER H HfSTBtTMENTS 126 Mountain Barometers
79
The Aneroid Barometer
80
Ridges and Thalwegs
89
Forms of Ground
90
Sketching Ground by Contours
91
Conventionalities
92
Their Direction
93
Degree of Shade
94
Shades by Contourlines
95
Diapason of Tints
97
CONVENTIONAL SIGNS 166 Signs for Natural Surface
98
Signs for Water
99
ABT PASE 169 Colored Topography
100
Signs for Miscellaneous Objects
101
Scales
103
PART V
105
The Old Method
106
The New Method
108
The Mining Transit
109
Second Object HO 179 When the Mine is entered by an Adit
110
When the Mine is entered by a Shaft Ill 181 To Dispense with the Magnetic Needle
111
Reducing Several Courses to One
112
Third Object
113
PART VI
115
Description of the Sextant
117
The Box Sextant U8 188 The Reflecting Circle H8 189 Adjustments of the Sextant
118
How to Observe 12
120
ABT PA6B 192 To Set Out Perpendiculars
121
To Measure a Line one end being inaccessible
122
Otherwise
124
Artificial Horizon
125
The Sun
126
To Measure Slopes
127
Oblique Angles
128
Advantages of the Sextant
129
PART VII
131
The Lowwater Line
132
In Narrow Water
133
Finding the Position of a Boat on a Seacoast
134
Trilinear Surveying
135
Instrumental Solution
137
Between Stations
138
The Soundingline
139
AET PA8E 220 Tides
140
Mean Level of the Sea
141
Tide Tables
142
Gauges in Bends
144
CHAPTEB VLTHE CHART 229 Methods of Fixing Points on the Chart
145
Conventional Signs
146
PART VIII
147
Outline of Operations
148
Corrections of the Base
152
A Broken Base I53 238 Base of Verification
153
Choice of Stations
154
Signals
157
Observations of the Angles
159
Reduction to the Centre
160
Spherical Excess
162
Correction of the Angles
164
ABT PAGE 247 Methods
165
Legendres Method
166
Problem 1
167
Second Solution
168
Lees Formulas
170

Common terms and phrases

Bibliographic information