South ET-05 Electronic Digital Theodolite Manual - New England ...

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6.11 Save Angle
Turn on and enter angle measure mode, press FUNC key to enter the second function selection mode, and
than press REC to save angle. At that time, the current angle is glittering twice, which represents it has
been saved to the memory. If you want to save angle again, press REC key after regulating an angle.
If you want to look over saved angle data, please refer to Chapter 7 about memory.
Notice: the instrument only supplies 256 groups of angle data (each group of angle data includes one
vertical angle and one horizontal angle). If angle data saved exceeds256 groups, ―FULL‖ will be displayed
on the interface which prompts users that memory is full. Users then need to clear manually to resave angle,
please refer to the chapter about memory for more details.
6.12 Measure Distance with Stadia
The distance from the measuring object to the instrument can be obtained by using the stadia hair of the
telescope with the accuracy ≤0.4%D.
(1) Set up the instrument at point A and put the surveying rod on target point B.
(2) Read the intercept d of apparent lines from up and down from the reticle on the survey rod.
(3) The horizontal distance(D) between A and B can be attained with the formula below:
D= 100×d
Up and down Stadia hair
The precision of this kind of distance measurement is not very high. This method is not
used when high precision is required.
Left and Right
Stadia hair
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