Q:

What are the parts and functions of a theodolite?

A:

A thedolite is an instrument used to measure horizontal and vertical distances using lenses and lines. They include several components, such as a telescope, a leveling mechanism, a tripod and a compass. Theodolites are used for surveying and construction to obtain precise readings of landforms so construction projects remain level and plumb with the ground.

Contemporary surveyors use electronic digital theodolites in their work. The telescope of a theodolite allows the user to view the target object easily. An adjustable tripod lets the mechanism stand on uneven ground. A leveling mechanism allows users to take accurate angle measurements. A compass or GPS system measures precise locations on construction sites.

Old theodolites are mounted on A-frames with leveling plates and a weighted plumb bob. The A-frame lets the telescope tilt up and down. Leveling plates keep the device from tilting. A plumb bob measures possible discrepancies on the ground upon which the tripod rests. Any deviation from being level and plumb means bad data.

There are four basic types of modern theodolites. Repeating theodolites take accurate horizontal readings by averaging results. Directional theodolites do not move like repeating models; they let users take measurements by subtracting two readings. Electronic digital theodolites automatically measure horizontal and vertical angles, thereby reducing mistakes taken from manual measurements. A total station adds in automatic distance measurements from a single setup.


Is this answer helpful?

Similar Questions

  • Q:

    What is the difference between theodolite and transit?

    A:

    Both theodolites and transits are instruments used by surveyors to measure horizontal and vertical angles, measure distances and determine elevations. Transits have an open design and are read through a scale on metal rings. Theodolites have a closed design, are lighter than transits and are read through a scale on glass discs. In general, theodolites are more precise than transits.

    Full Answer >
    Filed Under:
  • Q:

    What is a voltmeter used for?

    A:

    A voltmeter is an instrument used to measure the voltage between two points in an electrical circuit. Some voltmeters register direct current while others measure alternating current.

    Full Answer >
    Filed Under:
  • Q:

    What is a metabolic cart?

    A:

    A metabolic cart is a device used to measure the oxygen consumed when someone performs maximal or sub-maximal workouts, leading to calculations that measure the amount of energy expended during the workout, according to the Department of Health and Exercise Sciences at Skidmore College. Metabolic carts are used in human research and to analyze nutritional needs of patients.

    Full Answer >
    Filed Under:
  • Q:

    What are the parts of a mushroom?

    A:

    The parts of the mushroom are the cap, gills or pores, spores, stem, ring, volva, mycelium and hypha. The mushroom can be divided into underground and aboveground sections.

    Full Answer >
    Filed Under:

Explore