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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
- 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
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- 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
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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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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
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172 The Berger Solar Attachment Att
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174 Davis' Patent Solar Attachment.
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176 THE 5|" MOUNTAIN TRANSIT. This
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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
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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
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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
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:i98 Edge G-racl nation for Vertica
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The Open-Frame Protected Vertical C
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202 C. L. BEKGKK & SONS. Flexible J
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S fa 204 Style of trivets used with
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200 Patented. The Lateral Adjuster
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Mining Transit. Interchangeable wit
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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
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Portable Transit Instrument for Lat
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228 Reflecting Circle. Artificial H
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230 Current Meters, The types of cu
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232 Current Meters No. V and VI, As
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234 Plain Polar Plaiiimeter. This P
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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