3 : Types of Levels

Question 1

• has a long telescope attached to the level bar
• the telescope, which can be rotated 360°, fixes the direction of the line of sight

Answer 1

Dumpy Level

Question 2

• has a detachable telescope which rests in supports called wyes
• curved clips – used to fasten the telescope in place

Answer 2

Wye Level

Question 3

• also called a construction level or architect’s level
• used primarily in building construction where a high degree of precision is not a primary requisite

Answer 3

Builder’s Level

Question 4

• does not use a level vial and its ability to level itself depends upon the action of a complex pendulum and prism device
• equipped with a prismatic device called a compensator which is suspended on fine, non magnetic wires

Answer 4

Automatic Level

Question 5

• can be tilted or rotated about its horizontal axis
• tilting knob - used to rotate the telescope into a correct horizontal position

Answer 5

Tilting Level

Question 6

• a level instrument where most of its metal parts are made of invar to reduce the effects of temperature
• employed in first-order leveling work where extreme precision is an important requirement

Answer 6

Geodetic Level

Question 7

• engineer’s transit – universal surveying instrument

Answer 7

Transit as a Level

Question 8

• usually attached to conventional surveying instruments and uses laser light for leveling work

Answer 8

Laser Level

Question 9

• hand-held instrument used on surveys involving short sights
• consists of a brass tube about 15 cm long having a plain glass objective and a peep sight eye-piece

Answer 9

Hand Level