Two Peg Test
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Transcript of Two Peg Test
TWO PEG TEST
LOCATION• At the parking lot
behind the cabin area.ObjectivesTo determine wheather the levelling bubble and telescope line of sight are parallel.
PROCEDURES
1. Indentified a location to stand up a level.
2. Marked this level as point C.
3. Measured 30m at both side of the level to stand up staf.
4. After hat, mark the staf as point A and point B.
5. Take data at point A and point B.
6. Measured 10m straight line from point A as point D.
7. Moved the level to point D.
8.Then, point A and point B automatically becoming point A’ and point B’.
OBSERVATION DATA30 m
Reading staff B Reading staff A Height difference = m
First set up 1.370 1.288 0.082
Reading staff B Reading staff A Height difference = m’
Second set up 1.255 1.116 0.057
OBSERVATION DATA60 m
Reading staff B Reading staff A Height difference = m
First set up 1.430 1.260 0.170
Reading staff B Reading staff A Height difference = m’
Second set up 1.542 1.395 0.147
Difference (m-m’) 30 m 60 m
0.025 0.023