Complaint
Main feature and use:<o:p>
The telescope is inner focused with sharp image. The ruler is easy to read and estimate with high reading precision.
The vertical axis is semi-mobile, turning smoothly, high directional precision.
The horizontal sdandard deviation of one measurement is not larger than ±6", the vertical standard deviation of one
measurment is no larger than ±10".The instrument is mainly used for low level control measurement, engineering
measurement, wire measurement and construction measurement etc.
