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