Zeiss Ni2, with micrometer attachment. To focus an instrument, the distance from the ... This manual explains two examples of nonreversible compensators: the Ni2 and Nil instruments. The NI 002 instrument is also described to provide ananbsp;...
Title | : | Geodetic Leveling |
Author | : | M. Christine Schomaker, Ralph Moore Berry |
Publisher | : | - 1981 |
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