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76 Table H. Coefficients showing the per cent, of Refraction to be applied to the Sun's Declination. For the construction of the above table, see p. 67.
77 Table Inclination and Convergency of the Meridians. For the construction and use of the above table, see articles (13,) (14,) (15,) (17.) (18,) page 70. For details of instruction in U. S. Government <strong>Survey</strong>ing, see Hawes' System of "Rectangular <strong>Survey</strong>ing," and Burt's "Key to Solar Compass."
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ENGIN. LIBRARY UC-NRLF STANDARD INS
Page 9 and 10:
PREFACE. THE instruments enumerated
Page 11 and 12:
DESCRIPTION OP THE Essential Featur
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Tangent Screws. These are made of A
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The Finish. It is a well-known fact
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11 whatever. As a rule more harm th
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13 has sufficiently developed to im
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15 ordinary instruments, but it mus
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17 frame, and apply another drop of
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19 The finer and finest classes of
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21 applied with an adjusting pin ab
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23 adjustment of the telescope in t
Page 31 and 32: 25 Owing to the many improvements m
Page 33 and 34: 27 Engineers 9 Instruments and Thei
Page 35: ITrfpodfead 2 // Bolt 3 // >/ Mf J
Page 38 and 39: In practice, however, many engineer
Page 40 and 41: 34 The Pancratic, or Changeable Pow
Page 42 and 43: the 130 division, and moved on unti
Page 44 and 45: 38 Graduation Reading to 2O". A 15
Page 46 and 47: Decimal Vernier Graduation. For rai
Page 48 and 49: HORIZONTAL CIRCLE HORIZONTAL CIRCLE
Page 50 and 51: 44 line of collimation of the teles
Page 52 and 53: 46 Obviously then, the number of wh
Page 54 and 55: 48 Gradienter Screw Table I. Factor
Page 56 and 57: 50 The subjoined table affords a re
Page 58 and 59: 52 Plumbing and Centering Arrangeme
Page 60 and 61: 54 To make the adjustment for Paral
Page 62 and 63: 56 capstan-headed screw at left to
Page 64 and 65: 58 To adjust the line of collimatio
Page 68 and 69: 62 The Adjustment of the Wye Level.
Page 70 and 71: On slightly rising ground locate fo
Page 72 and 73: (5.) Astronomical Triangle. The hei
Page 74 and 75: 68 From the -(- sign of the " diffe
Page 76 and 77: 70 Degree of Precision Required. (1
Page 78 and 79: 72 tions for refraction, using the
Page 80 and 81: 74 Correction to the Mean Refractio
Page 84 and 85: 78 To Find the Meridian from " Pola
Page 86 and 87: 80 REMARKS. If the instrument is no
Page 88 and 89: 82 These devices are being more and
Page 90 and 91: 84 c. Directions. For finding the S
Page 92 and 93: 6. Directions. For reducing the nor
Page 94 and 95: 88 On Stadia Measurement. Written e
Page 96 and 97: 90 included between this and the ot
Page 98 and 99: 92 Jug, R, of the rod AB is the dif
Page 100 and 101: 94 gent screw of the main telescope
Page 102 and 103: 96 zero when plates are leveled up
Page 104 and 105: i I * 2 I! all 35 e 5c u fcc - = H
Page 106 and 107: 100 Berger Short Focus Lenses. A se
Page 108 and 109: 102 NOTE. In selecting instruments
Page 110: RIBBING PARTS OF INSTRUMENTS. Patro
Page 115: The Berber Complete Engineers' and
Page 119: [Patented) The Berber Complete Mine
Page 122 and 123: 11(5 5 O o to tO u tO CM in in in o
Page 124 and 125: 118 n ai in Spirit Levels. For the
Page 126 and 127: l, 33 120
Page 128 and 129: 122
Page 130 and 131: 14 124 C. L,. BEKGEK & SONS. BOSTON
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1 5" AND 1 7|" C. t. BKKGER & SONS.
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C. 1-28 BEKGEU & SONS. Monitor Type
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130 The Berger 18 MONITOR TYPE WYE
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1 18 132 C. I*. BERGER & SONS, BOST
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18 134 II ENGINEERS' WYE LEVEL. lev
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136 18" HYDROGRAPHER'S WYE LEVEL Ha
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138 Reversion Level. Applicable to
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140 The Telescope will be invariabl
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142 THE GEODETIC LEVEL. In response
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144 COAST SURVEY PRECISE LEVEL The
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146 PLANE TABLE This instrument, as
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61" 150 ENGINEERS' AND SURVEYORS' T
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No. 1 a. 6 1 4 in. at edge of gradu
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No. I a. T 4 in. at edge of graduat
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No. 1 c. 154 C. L. BERGER & SO>S in
Page 162 and 163:
No. 1 c, Style p. in. at edge of jr
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. 1 f. is made by C. L. Berger & So
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160 C. L. BEKGEK & SONS. MONITOR TY
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162 64 SURVEYORS' TRANSIT No. 1 s.
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5^" 164 C. L. BERGER & SONS, BOSTON
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166 C. L. BERGER & SONS. BOSTON 5|"
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5|" 168 ENGINEERS' AND SURVEYORS' T
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The Surveyors' Solar Attachment. Pl
Page 178 and 179:
172 The Berger Solar Attachment Att
Page 180 and 181:
174 Davis' Patent Solar Attachment.
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176 THE 5|" MOUNTAIN TRANSIT. This
Page 184 and 185:
178 The 41" Mountain and Mining: Tr
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4|" 180 C. L,. BERGER & SONS. BOSTO
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182 The 4" Mountain, Mining and Rec
Page 190 and 191:
184 The 4" Complete Transit- Theodo
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186 4>4 " Complete Mine Transit No.
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^ 188 t4 Mining Transits. All of th
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The 190 See M Fig. 1. Berger Patent
Page 198 and 199:
03 192 Complete Mining Transit No.
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|S go Complete Wet-Mine Transit No.
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196 Different Types of Vertical Arc
Page 204 and 205:
:i98 Edge G-racl nation for Vertica
Page 206 and 207:
The Open-Frame Protected Vertical C
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202 C. L. BEKGKK & SONS. Flexible J
Page 210 and 211:
S fa 204 Style of trivets used with
Page 212 and 213:
200 Patented. The Lateral Adjuster
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Mining Transit. Interchangeable wit
Page 216 and 217:
210 Tunnel Transits. Xo. 1C a Tunne
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212 Triaiigulatioii Transit- Theodo
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No. lib. 214 Complete Double Opposi
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210 No. 11 m. 7-iiich Complete Tran
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218 No. llg, 7-inch Complete Triang
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220 No. 12. 8-iiich Transit for Tri
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SPECIFICATIONS : No. 15 Alt-Azimuth
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No. 15 b. Alt.-Azimuth. 224 Alt. -A
Page 232 and 233:
Portable Transit Instrument for Lat
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228 Reflecting Circle. Artificial H
Page 236 and 237:
230 Current Meters, The types of cu
Page 238 and 239:
232 Current Meters No. V and VI, As
Page 240 and 241:
234 Plain Polar Plaiiimeter. This P
Page 242 and 243:
236 Leveling Rods No. 145 No. 147 N
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Paine's Steel Tape Measures. & inch
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240 Surveyors' Chain Tapes. Heavy J
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2-12 Standard Steel Tape Measures.
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No. 210. Plummet Lamp. tfo. 212. 24
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246 Portable Anemometers. These ins
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PRICES SUBJECT TO CHANGE WITHOUT NO
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J Tripod Head 2 // Bolt 3 * .* Nut
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Levels, Locke's Hand Reversion Revo
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C. Li. Berger & Sons' Bevel-Limb Tr
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0) O (^ c CL 0? Z O (0 O K lu ffi C
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O CO K III III These prices do not
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ord (In whether . 4 O ~ bJD p,"* 3,
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a -iQ. Q u u o 0) o 0) U O U CO o C
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These prices do not include bag (SI
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Q III o o z o u o o U Ott bl CD O U
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o O (0 ui y O J O Q. O U 5> OC os .
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800290 I A 33012 Engineeringlibrary
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