Levels

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Levels

  1. 1. Levels and Veniers TechConnect Concrete
  2. 2. Uses of a level <ul><li>Establish elevations and grades </li></ul><ul><li>Establish differential elevations </li></ul><ul><li>Transfer elevations from one point to another </li></ul>
  3. 3. Types of levels <ul><li>Builder’s level </li></ul><ul><li>Dumpy level </li></ul>
  4. 4. <ul><li>Automatic level </li></ul><ul><li>Rotating laser-beam instrument </li></ul>
  5. 5. Parts of a level
  6. 6. Types of verniers <ul><li>Direct or single vernier </li></ul>
  7. 7. <ul><li>Double or double direct vernier </li></ul><ul><li>Folded vernier </li></ul>
  8. 8. <ul><li>A vernier index shows the number of degrees passed over on the scale. </li></ul><ul><li>The coincident vernier graduation gives directly the additional part of the degree. </li></ul>
  9. 9. Vertical and horizontal cross hairs and line of sight on leveling instruments
  10. 10. <ul><li>Keep instrument in carrying case when not in use </li></ul>Proper care of leveling instruments <ul><li>Protect instrument from shock and vibration when transporting </li></ul><ul><li>Remove instrument from carrying case by lifting the level bar </li></ul><ul><li>Never force screws or other moving parts </li></ul>
  11. 11. <ul><li>Place lens and tripod caps in carrying case after removing them from instrument </li></ul><ul><li>Do not remove lenses </li></ul><ul><li>Clean lenses with soft tissue only </li></ul><ul><li>Loosen leveling screw before returning instrument to carrying case </li></ul><ul><li>Carry tripod under your arm with the instrument </li></ul><ul><li>Always use sunshade regardless of weather </li></ul>
  12. 12. Parts of a leveling rod
  13. 13. © 2006 Oklahoma Department of Career and Technology Education

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