It is named so because of the shorter telescope it uses and also because in the original dumpy level the eye piece was an inverting lens such that it gave a shorter view for the same power of lens compared to wye level.
Dumpy level provides a horizontal line (parallel to earth's curvature); you can read the scale by holding it normal to the ground level. Take separate readings for separate points then compare them
The spirit levelwas invented by Melchisedech Thevenot
Invented is the past participle of the verb invent. verb /past /past participle = invent /invented /invented
There is no standard language, this is why higher-level languages were invented - to provide a layer of abstraction. A program written in a high-level language such as C++ or Java will execute the same on a PC as it will on a Mac, despite the fact that they have different architectures and therefore the binary code will be different.
it is a spirit level
The auto level makes it easier to do the work. Using the dumpy level requires you to put in all of the work.
It as 3 following steps to adjust the dumpy level 1.SETTING 2.LEVELLING.3FOCUSING
One advantage of the dumpy level is that it is extremely mobile. A disadvantage is the difficult in using and making accurate measurements.
Dumpy
In dumpy level we can check only horizontal angles whereas in theodolite we can check vertical angles also.
It is named so because of the shorter telescope it uses and also because in the original dumpy level the eye piece was an inverting lens such that it gave a shorter view for the same power of lens compared to wye level.
You can find all of these parts by looking up the diagram of a dumpy. They are available with a simple image search.
i honestly dont know
Dumpy level provides a horizontal line (parallel to earth's curvature); you can read the scale by holding it normal to the ground level. Take separate readings for separate points then compare them
AIM/PURPOSE: To describe the instruction for the calibration of Dumpy Level to ensure that equipment is maintained in fully serviceable condition, is safe to operate and meets environmental requirements. FOR THE CALIBRATION OF DUMPY LEVEL The method described below is to be used on-site check prior to use as to the accuracy of the Dumpy level between calibration checks. This Work instruction shall be conducted at the commencement and completion of a contract. 1. Drive two pegs, "A" & "B", into the ground six metres or more apart 2. Set Dumpy up at "C" 3. Shoot a level at "A" and "B" 4. Relocate Dumpy to "D" and shoot a level at "A" and "B" 5. Record the appropriate result in the workbook. (Levels shot at "D" should be within ± 10mm of "C") D A C B
First take the dumpy level to the place of surveying and place the tripod on the ground. Make sure that the three points of the tripod is placed such that the observer can take readings quite easily. Then take the dumpy level and place it on tripod and fix the center nut and make sure that the dumpy level doesn't shake. Then check the bubble level in the dumpy level and use adjust the main level screw so that at least 2/3 of the bubble is inside the circular area of the bubble level. Then adjust it by the other two screws and rotate the dumpy level 90 degrees and check whether the bubble shows a leveled stage. If it shows that the bubble is centered then it is O.K the dumpy level is leveled..... Then in order to take a reading, the u bubble should have to be leveled adjust the screw in the right side(there are a few adjusting screws,please get to know the actions performed by the screws, for that we must handle the instrument for sometime) and make sure the 'U' shape is formed. Now the instrument is ready take readings.....