Topcon DL-103 Series, Инструкция по эксплуатации

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10
Attaching the Instrument to the Tripod Head
Take the instrument carefully out of the carrying case and place it on the
tripod head.
1
Align the tripod screw with the socket on the base of the instrument,
and screw in the tripod screw until the instrument is securely fixed to
the tripod head.
2
If the horizontal circle is being used for measuring an angle or estab-
lishing a line, the instrument must be set up exactly over the point
with the plum bob.
3
Use the three leveling screws to center the circular bubble level in
other to level the instrument. If a dome head tripod is being used,
loosen the tripod screw slightly and move the instrument around on
top of the tripod head to center the circular level bubble vial. When
the bubble is within the red circle, tighten the tripod socket.
Setting the Instrument Up Over the Point
When the instrument is used to measure angles or to establish a line,
the instrument must be set up exactly over a particular point with the
plumb bob.
1
Hang the plumb bob hook on the plumb bob hanger of the tripod
screw.
2
Next suspend the plumb bob string from the plumb hook and adjust
the string length with the slipping device so that the plumb bob is at a
suitable height.
3
If the instrument is not set up over the required point, move the
instrument over the point without disturbing the relation between the
tripod legs and the tripod head. Place the tripod in position so that the
plumb bob is within one centimeter or so of the point. Grasp two of
the tripod legs and adjust with respect to the third leg so that the tri-
pod head is level at a convenient height with sufficient spread of the
legs when the two legs are allowed to touch ground.
4
Finally press each leg firmly into the ground while watching the
plumb bob and tripod head.
5
Loosen the tripod screw slightly and slide the instrument on the tripod
head in order to position the plumb bob directly over the point and
tighten the tripod screw.