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ENGIN. LIBRARY UC-NRLF STANDARD INS
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PREFACE. THE instruments enumerated
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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
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25 Owing to the many improvements m
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27 Engineers 9 Instruments and Thei
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ITrfpodfead 2 // Bolt 3 // >/ Mf J
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In practice, however, many engineer
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34 The Pancratic, or Changeable Pow
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the 130 division, and moved on unti
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38 Graduation Reading to 2O". A 15
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Decimal Vernier Graduation. For rai
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HORIZONTAL CIRCLE HORIZONTAL CIRCLE
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44 line of collimation of the teles
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46 Obviously then, the number of wh
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48 Gradienter Screw Table I. Factor
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50 The subjoined table affords a re
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52 Plumbing and Centering Arrangeme
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54 To make the adjustment for Paral
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56 capstan-headed screw at left to
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58 To adjust the line of collimatio
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62 The Adjustment of the Wye Level.
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On slightly rising ground locate fo
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(5.) Astronomical Triangle. The hei
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68 From the -(- sign of the " diffe
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70 Degree of Precision Required. (1
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72 tions for refraction, using the
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74 Correction to the Mean Refractio
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76 Table H. Coefficients showing th
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78 To Find the Meridian from " Pola
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80 REMARKS. If the instrument is no
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82 These devices are being more and
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84 c. Directions. For finding the S
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6. Directions. For reducing the nor
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88 On Stadia Measurement. Written e
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90 included between this and the ot
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92 Jug, R, of the rod AB is the dif
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94 gent screw of the main telescope
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96 zero when plates are leveled up
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i I * 2 I! all 35 e 5c u fcc - = H
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100 Berger Short Focus Lenses. A se
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102 NOTE. In selecting instruments
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RIBBING PARTS OF INSTRUMENTS. Patro
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The Berber Complete Engineers' and
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[Patented) The Berber Complete Mine
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11(5 5 O o to tO u tO CM in in in o
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118 n ai in Spirit Levels. For the
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l, 33 120
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122
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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
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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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- Page 172 and 173: 166 C. L. BERGER & SONS. BOSTON 5|"
- Page 174 and 175: 5|" 168 ENGINEERS' AND SURVEYORS' T
- Page 176 and 177: The Surveyors' Solar Attachment. Pl
- Page 178 and 179: 172 The Berger Solar Attachment Att
- Page 180 and 181: 174 Davis' Patent Solar Attachment.
- Page 182 and 183: 176 THE 5|" MOUNTAIN TRANSIT. This
- Page 184 and 185: 178 The 41" Mountain and Mining: Tr
- Page 186 and 187: 4|" 180 C. L,. BERGER & SONS. BOSTO
- Page 188 and 189: 182 The 4" Mountain, Mining and Rec
- Page 190 and 191: 184 The 4" Complete Transit- Theodo
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- Page 194 and 195: ^ 188 t4 Mining Transits. All of th
- Page 196 and 197: The 190 See M Fig. 1. Berger Patent
- Page 198 and 199: 03 192 Complete Mining Transit No.
- Page 200 and 201: |S go Complete Wet-Mine Transit No.
- Page 202 and 203: 196 Different Types of Vertical Arc
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- Page 206 and 207: The Open-Frame Protected Vertical C
- Page 208 and 209: 202 C. L. BEKGKK & SONS. Flexible J
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- Page 212 and 213: 200 Patented. The Lateral Adjuster
- Page 214 and 215: Mining Transit. Interchangeable wit
- Page 216 and 217: 210 Tunnel Transits. Xo. 1C a Tunne
- Page 218 and 219: 212 Triaiigulatioii Transit- Theodo
- Page 222 and 223: 210 No. 11 m. 7-iiich Complete Tran
- Page 224 and 225: 218 No. llg, 7-inch Complete Triang
- Page 226 and 227: 220 No. 12. 8-iiich Transit for Tri
- Page 228 and 229: SPECIFICATIONS : No. 15 Alt-Azimuth
- Page 230 and 231: No. 15 b. Alt.-Azimuth. 224 Alt. -A
- Page 232 and 233: Portable Transit Instrument for Lat
- Page 234 and 235: 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
- Page 244 and 245: Paine's Steel Tape Measures. & inch
- Page 246 and 247: 240 Surveyors' Chain Tapes. Heavy J
- Page 248 and 249: 2-12 Standard Steel Tape Measures.
- Page 250 and 251: No. 210. Plummet Lamp. tfo. 212. 24
- Page 252 and 253: 246 Portable Anemometers. These ins
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- Page 256 and 257: J Tripod Head 2 // Bolt 3 * .* Nut
- Page 258 and 259: Levels, Locke's Hand Reversion Revo
- Page 260 and 261: C. Li. Berger & Sons' Bevel-Limb Tr
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- Page 264 and 265: O CO K III III These prices do not
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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