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elevation difference(VD) will change too.But if collimate A0 with the second
method,vertical angle is locked in the direction where prism is located and
can't range from up-and-down movement of telescope.
Operation steps
1
Click "Offset" key.
2
Click
"ANG.Offset"
key in ejecting dialog
box.
3
Select "Free VA"(or
"Lock
VA")
stylus
to
to
angle
measurement.(User
makes a choice on
the basis of own
demand)
Keys
【Offset】
with
start
offset
Display
64
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