2008. 2. 20. 14:18
double centering 개념2008. 2. 20. 14:18
double centering
–noun Surveying.
| a method of extending a survey line by taking the average of two foresights, one with the telescope direct and one with it inverted, made each time by transiting the telescope after a backsight. |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
