WILSON, RENSHAWE, 1 
DOUGLAS, UOODK. J 
WYOMING. 
83 
ROCKY MOUNTAIN SECTION OF TOPOGRAPHY. 
WYOMING-COLORADO. 
TRIANGULATION STATIONS. 
Wyoming. 
This work depends on a base line 4.6 miles in length, measured 
westward along the railroad tangent, beginning 2£ miles west of Fort 
Steele. The line was prepared in the usual manner by nailing boards 
and zinc strips to the cross-ties. Three complete measurements were 
made with standard 300-foot tape No. 1, temperatures being taken 
by two Standard thermometers at each tape length. 
The length of base reduced to sea level is 24,181.420 feet. 
Logarithm of length in meters =3. 8674977. 
Positions depend upon the latitude and longitude pier of the 
Wheeler survey, established in 1872, corrected for the revised longi- 
tude of Salt Lake, from which it was originally determined. The 
astronomic point was occupied as an azimuth station on two nights, 
and a check azimuth was observed near milepost 145 on the Colorado- 
Wyoming State line. During the progress of this work 12 primary 
and 4 secondary stations were occupied, and numerous high peaks 
were located by intersections, controlling three 30-minute quadrangles 
in Wyoming and one in Colorado. 
Angles were measured and azimuths were observed with an 8 -inch 
micrometer theodolite by Mr. Frank Tweedy, topographer, who also 
prepared and measured the base line. 
AZIMUTH MARK, CARBON COUNTY. 
Situated one-half mile west of Fort Steele, on end of spur just south 
of Fort Steele-Rawlins wagon road. 
Station mark : A stone post, 24 by 10 by 6 inches, in center of top 
of which is cemented a bronze tablet. 
[Latitude 41° 46' 39.02". Longitude 106° 57' 30.53".] 
To station- 
Azimuth. 
Back azimuth. 
Log. distance. 
Greenville ... 
63 27 32.85 
97 03 40.20 
154 41 30.14 
257 18 45.01 
267 28 15.63 
243 22 34. 11 
277 02 01.27 
334 39 55. 60 
77 23 25.44 
87 28 40. 30 
Meters. 
4. 0640571 
East base . 
3. 5384929 
Mount Steele 
3. 8839366 
St. Marys . . . 
3.9982118 
Astronomic station 
2. 9324543 
