1. The document contains a table of station (STA), angle, correction, and log sine values.
2. Angles are adjusted in two steps using correction values to calculate adjusted degrees, minutes, and seconds.
3. Log sine values are calculated and compared at each adjustment step to check calculations.
7. 11/23/2010
7
Hand Level
14
Hand level
This is the simplest type of hand
level. It is useful for estimating
slope & elevation changes.
This instrument is called the
Abney level. It can be used
to measure slope, vertical
angles and stadia distances.