Question

dumpy level is the type of leveling instrument has been the workhorse of the industry for than 150years .true or false​

Answer 1

The dumpy level, a traditional optical leveling instrument, has indeed been the workhorse of the industry for over 150 years. Its primary use is to establish horizontal planes and measure land elevations. It involves a process of setup, leveling, and reading heights on a leveling staff via a fixed telescope on a tripod.

Step-by-step explanation:

The statement that the dumpy level has been the workhorse of the surveying and leveling industry for more than 150 years is true. The dumpy level is a traditional optical leveling instrument used to establish or verify points in the same horizontal plane. It has been a fundamental tool for civil engineers, surveyors, and construction professionals to accurately measure land elevations, as it provides reliable results crucial for creating level surfaces or grading landscapes for construction projects.

The dumpy level setup requires a leveling instrument placed on a tripod, with a telescope fixed to its frame, and the ability to measure angles and heights through a crosshair sight on the telescope. Its usage involves the process of leveling the instrument by adjusting the legs of the tripod and using the instrument's built-in spirit level or bubble level. Once positioned and calibrated, the dumpy level can be used to read heights on a calibrated staff placed at various locations across the leveling site.

Steps for Using a Dumpy Level:

1. Set up the dumpy level on a stable tripod.
2. Level the instrument using its spirit or bubble level.
3. Look through the telescope to align the crosshairs with the leveling staff.
4. Take the reading on the staff to measure the elevation.
5. Move the staff to different locations to measure relative heights.