Total station needs to set instrument height and side height when coordinate lofting, and how to measure it if necessary.

Usually, the total station can't meet the requirements of elevation lofting. Only the plane coordinates are put in the middle pile, and the elevation is set out with a level. However, the height of instrument and prism must be measured in setting out three-dimensional coordinates, and the height of prism can be read directly. If the instrument is high, use a tape measure or steel rule. Of course, if conditions permit, high poles can be used. There is a marking line from the control pile to the center of the instrument, and the distance between them is the height of the instrument.

If elevation measurement is not carried out, there is no need to set the instrument height. If necessary, the height of the instrument can be measured or calculated with a steel ruler, and the height of the prism can be read directly from the mirror rod.

Extended data:

Matters needing attention of total station:

1, the instrument shall be kept by a special person, and shall be taken back to the office after being used on site every day, and shall not be put in the on-site toolbox.

2. The instrument box should be kept dry, moisture-proof and waterproof, and the desiccant should be replaced in time. The instrument must be placed on a special shelf or in a fixed position. ?

3. When the instrument is not used for a long time, it should be taken out regularly in January to prevent mildew, and the instrument should be electrified to drive away the tide, so as to keep the instrument in good working condition. ?

4, the instrument should be placed neatly, not upside down, before construction should check whether the instrument box straps and handles are firm.

5. Before taking the instrument out of the box, be sure to see the way and position of the instrument in the box. When loading and unloading instruments, you must hold the handle. When taking the instrument out of the instrument box or loading it into the instrument box, please hold the handle and base of the instrument, not the lower part of the display unit.

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