Examkin

Question

Difficulty: HardElementary Surveying Instruments and Fieldwork

Match each elementary surveying instrument listed on the left with its primary fieldwork function on the right.

  • Gunter's ChainMeasuring linear distances calibrated specifically for statute land area units
  • Abney LevelMeasuring vertical slope angles and determining terrain gradients
  • Surveying ArrowsMarking the exact count of full chain lengths completed along a survey line
  • Plumb BobCentering surveying instruments precisely over ground station pegs

Answer

Gunter's Chain matches measuring linear distances for land area units; Abney Level matches measuring vertical slope angles; Surveying Arrows match marking completed full chain lengths; Plumb Bob matches centering instruments precisely over ground station pegs.
Each instrument is correctly paired based on standard practical geography fieldwork procedures: Gunter's chain is calibrated for land area (acreage) calculations; the Abney level measures vertical slope angles; surveying arrows tally completed chain intervals along the baseline; and the plumb bob provides precise vertical centering of equipment over ground station pegs.

Step-by-Step Solution

1
Identify the primary structural design and historical purpose of Gunter's Chain
Gunter's chain measures 66 ft66\text{ ft} (4 rods4\text{ rods}), providing a direct link between linear chaining and land area units in acres.
It was specifically constructed so that 10 square chains=1 acre10\text{ square chains} = 1\text{ acre}.
2
Determine the operational function of an Abney Level
The instrument is used for vertical angle measurement and slope determination during field reconnaissance.
It incorporates a handheld sighting tube with a index arm and spirit level attached to a vertical arc.
3
Distinguish between auxiliary chain survey tools (Arrows vs. Plumb Bob)
Surveying arrows mark completed chain intervals, while a plumb bob ensures vertical alignment over a ground mark.
The follower collects arrows inserted by the leader to tally chain lengths, whereas a plumb bob uses gravity for accurate station centering.

Key Concept

Elementary Surveying Instruments and Fieldwork Functions
Estimated Time:2m 0s
Rate this question

Topics

Elementary Surveying Instruments and Fieldwork

More questions from this topic