STONEX R2
13.8 PLUMMET
1. OPTICAL PLUMMET
Check
1. Set the instrument on the tripod and place a piece of white paper with two crisscross
lines on it right below the instrument.
2. Adjust the focus of the optical plummet and move the paper so that the intersection
point of the lines on the paper comes to the center of the field of view.
3. Adjust the leveling screws so that the center mark of the optical plummet coincides
with the intersection point of the cross on the paper.
4. Rotate the instrument around the vertical axis, and observe whether the center mark
position coincides with the intersection point of the cross at every 90°.
5. If the center mark always coincides with intersection point, no adjustment is necessary.
Otherwise, the following adjustment is required.
Adjust
1. Take off the protective cover between the optical plummet eyepiece and focusing knob.
2. Fix the paper. Rotate the instrument and mark the point of the center of optical
plummet which falls on the paper at every 90. As illustrated: Point A, B, C, and D.
3. Draw lines that attach AC and BD and mark the intersection point of the two lines as O.
4. Adjust the four adjusting screws of the optical plummet with an adjusting pin until the
center mark coincides with Point O.
5. Repeat the inspection and adjusting steps to make the instrument meets the
requirements.
6. Replace the protective cover.
2. Laser plummet
This is a new technology from our factory,it adopts laser beam to center the instrument.
Press FNC to find the interface as Fig.1 show: