Figure 71. Left side axis bearing, vertical circle, vertical circle housing, and vertical
circle prism carrier, disassembly and reassembly.
Section XVI. U-STANDARD AND INNER VERTICAL AXIS
125. General
the horizontal circle housing by means of the horizontal
The U-standard is the upper part of the theodolite
circle prism carrier.
The U-standard supports the
which rotates on the inner vertical axis and is secured to
AGO 5078A
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