3 Menit Langsung Bisa Theodolite

Summary

This instructional video from the surveying assistant team at the National Institute of Technology Yogyakarta explains how to use the Nikon NE-102 digital theodolite. It covers the setup process, including stabilizing the instrument, aligning it with the Benchmark, and adjusting bubble levels for accuracy. The video guides viewers through using a geological compass to point the device north and power it on, as well as targeting objects and recording the measurements needed to calculate X, Y, and Z coordinates. The process is repeated for each measurement point, ensuring precise data collection in surveying tasks.

Takeaways

• 😀 Ensure the theodolite is placed on a flat surface and securely mounted on the tripod to avoid instability.
• 😀 Level the theodolite by adjusting the tripod screws to center the leveling bubble and ensure proper alignment.
• 😀 Use a geological compass to align the theodolite with the North direction for accurate readings.
• 😀 Power on the theodolite and confirm that the horizontal angle reads '0°', indicating proper alignment with North.
• 😀 Adjust the Nivo tube (horizontal leveling bubble) using the adjustment screws to ensure the instrument is perfectly leveled.
• 😀 Measure the height of the theodolite from the ground to the marked point using a measuring tape.
• 😀 For accurate targeting, align the theodolite's sighting device with the object or target to be measured.
• 😀 Focus the telescope using the focus adjustment screw to bring the target object into sharp view.
• 😀 Record the horizontal and vertical angles as well as the azimuth values for the target point.
• 😀 Repeat the process multiple times to ensure consistency and precision when obtaining coordinates for all measurement points.
• 😀 Use the collected angle data to calculate the X, Y, and Z coordinates of the measured target points.

Q & A

What is the first step when using a digital theodolite?

The first step is to place the theodolite on a flat surface and attach it securely to the tripod using the locking screws to prevent it from falling off.

How should the theodolite be positioned for accurate measurement?

The theodolite should be aligned with the benchmark (BM) or the point of measurement. The bubble in the instrument must be centered, which can be adjusted using the leveling screws on the tripod.

What is the purpose of adjusting the Nivo tube bubble on the theodolite?

The purpose of adjusting the Nivo tube bubble is to ensure the theodolite is properly leveled horizontally, which is crucial for accurate measurements.

What should be done to measure the height of the theodolite?

To measure the height of the theodolite, use a measuring tape from the lowest point of the instrument to the '+' mark on the theodolite.

How do you set the orientation of the theodolite to North?

Use a geological compass to align the theodolite to face North. The screen will display a value of 0° as the horizontal angle when the theodolite is correctly aligned.

What is the next step after powering on the theodolite?

After powering on the theodolite, it will display 0° as the horizontal angle, indicating that the instrument is properly oriented towards North.

What is the purpose of the 'rough targeting' step?

The rough targeting step is to align the sighting scope with the target object, in this case, a pole, to get an approximate reading before fine-tuning the measurement.

How do you ensure that the target object is clearly visible through the theodolite?

You can adjust the focusing screw on the theodolite’s telescope to ensure the target object is clearly visible.

What measurements are recorded during the process?

The values of the horizontal and vertical angles, as well as the top, middle, and bottom values, are recorded. These values are used to calculate the coordinates (X, Y, Z) of the measurement point.

How many times should the measurement process be repeated?

The process should be repeated for each point of measurement, continuing until all the points are measured.