How To Make A Theodolite - How To Make. On this basis, you measure angles and distances. The following terms should be remembered while dealing with a transit theodolite;
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If the earth were flat then the ocean horizon would be in line with the top edge. Unlock the upper horizontal clamp, and rotate the theodolite until the arrow in the rough sights is lined up with the point you wish to measure, then lock the clamp. This data can further be used to calculate the height of the object from the ground. Adjust the plummet using the knobs on the bottom. Repeat until the bubble is centred for all four positions. Take intermediate points ae1, ae2. The eyepiece of the telescope is used to find the target. Locate your desired reference point that you wish to set up above. It is important that this point has a defined centre. When combined with other instruments such as electronic distance measurements or measuring chains/tapes, these angular measurements can help surveyors create a detailed plan of an area.
Rotate the theodolite body 90 degrees to the left. Use the upper horizontal adjuster (not the clamp) to align the. A sight on the top of the telescope is used to align the target. Screw the theodolite on to the tripod. You then look along the top edge and see where the ocean horizon is relative to that. Micrometer theodolite is that type of theodolite in which micrometer is provided for reading out graduated circle. The target is made clear by using the focusing knob on the instrument. A balloon is released in front of the. Rotate the theodolite body 90 degrees to the left. Repeat the levelling process until the theodolite is level and centred. Pin),extend the pin through the center of the 2nd disk.attach the.
