49
⑦
Click “Continue”
key,then dHD, dVD and
dSD between prism A
and prism C will be
shown.
【
Continue
】
※1）Click “Exit” key to return main menu.
●Procedure of MLM Method (A-B, B-C) is completely same as Method (A-B,
A-C) Method.
4.4.8 Line-height Measurement
This function is applied for measuring and determining a height of line(like
electric wire)above ground which is hard to reach.
See following image, L is point on the overhead line, G is projective point on
the ground, which is also difficult to set target, A and B are baseline which
are set up in a certain distance under line. After measuring horizontal
distances from instrument to prisms A/B and confirm the base line, VD
between A and B, VD between L and G, HD between instrument and
L(G),offset distance from A to L(G) will be determined and shown.
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