The Practical Surveyor's Guide: Containing the Necessary Information to Make Any Person of Common Capacity a Finished Land Surveyor, Without the Aid of a TeacherH.C. Baird, 1864 - 121 páginas |
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Página 45
... Back sight.33 35.40 32.35 N.50 W. 15.00 b20 19.15a 13.20 A 12.00 9.30 23.40 q Back sights . S.50 ° E .. 19.15 N.85 E. 20 , and the half right angle having been taken at 5 on the chain line , 20-5-15 - the distance to B. C. C. L. Again ...
... Back sight.33 35.40 32.35 N.50 W. 15.00 b20 19.15a 13.20 A 12.00 9.30 23.40 q Back sights . S.50 ° E .. 19.15 N.85 E. 20 , and the half right angle having been taken at 5 on the chain line , 20-5-15 - the distance to B. C. C. L. Again ...
Página 68
... back sight ; if that agree with the fore sight , you may safely conclude that no attraction exists at either ; but should it differ , make trial in some other direction , in like manner , till you find what station the attraction is in ...
... back sight ; if that agree with the fore sight , you may safely conclude that no attraction exists at either ; but should it differ , make trial in some other direction , in like manner , till you find what station the attraction is in ...
Página 82
... back and fore sights should always be taken ; and to make sure that no attraction exists in the first station , take a course in a contrary direction to some object , go to that object and take a back sight ; if the fore and back sight ...
... back and fore sights should always be taken ; and to make sure that no attraction exists in the first station , take a course in a contrary direction to some object , go to that object and take a back sight ; if the fore and back sight ...
Página 93
... Back Fore Depres- Datum tion . sight . sight . sion . 100 feet . Dis- tance . Remarks . 100 . 1.11 6.84 5.73 101.11 0 .00 100 5.73 8.10 2.37 98.74 100 8.10 8.15 0.05 98.69 100 2.35 8.15 5.80 101.04 100 0.80 5.80 5.00 101.84 100 0.45 ...
... Back Fore Depres- Datum tion . sight . sight . sion . 100 feet . Dis- tance . Remarks . 100 . 1.11 6.84 5.73 101.11 0 .00 100 5.73 8.10 2.37 98.74 100 8.10 8.15 0.05 98.69 100 2.35 8.15 5.80 101.04 100 0.80 5.80 5.00 101.84 100 0.45 ...
Página 96
... back sight to rod 5 ; difference , 1 to be added to last , gives 3 of cutting at instrument . Fore sight , 3 ; differ- ence to be added to last , gives 4 feet cutting at the rod ; but now , height of instrument , 5 ; back sight , 2 ...
... back sight to rod 5 ; difference , 1 to be added to last , gives 3 of cutting at instrument . Fore sight , 3 ; differ- ence to be added to last , gives 4 feet cutting at the rod ; but now , height of instrument , 5 ; back sight , 2 ...
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Términos y frases comunes
acres ANDREW DUNCAN angular spaces Art of Dyeing back sight base line bearing breadth Byrne calculation CAREY chains and links Charles O'Neill Chemistry chord cloth Coal Tar Colors compass course curve deducted degree of curvature diagonals diameter difference of latitude distance divided Dussauce Dyeing East or West edition Engravings equal EXAMPLE extreme point feet find the area fixed four pole chains given gives the area half the sum HENRY CAREY Illustrated inches inflected intersection Iron LATITUDE AND DEPARTURE length Let A B C limb lustrated Manufacture Metals method Morfit Mulhouse multiply natural sine needle Northings OLIVER BYRNE parallel parallelogram perches perpendicular Phosphorus place their sum Practical Treatise radius ruler Rules and Practical Set your instrument sine South spherical excess square four pole square root subtract surveyor TABLES OF LATITUDE tance tangent theodolite tion trapezium volume water wheels Young Fustic