How 2023 Agricultural Neco Practical Specimens Will Come Out

Dear Neco 2023 candidate, here is exactly how Neco 2023 Agric practical questions are likely to come out, and if you study this in detail, you will be able to answer all the questions on your own:


How 2023 Agricultural Neco Practical Specimens Will Come Out

Proper Identification of the Specimens

All about specimen A-D

Specimen A-C are all Surveying Instruments

Specimen A – Measuring Tape

  1. It is usually made of linen or fine steel sheet.
  2. It is usually marked on one side with metric units and the other side with the imperial unit.
  3. The Measuring Tape is of various types and lengths.
  4. The Measuring Tape is normally wound in a small case from where it is unwound for use.
  • It is used in taking short or detailed measurements of length, breadth, and height.

Specimen B – Gunter’s Chain

  1. It consists of a series of dumbbell-shaped links of steel wires joined together by three small rings.
  2. One Gunter’s Chain is normally 20.13m (66ft) in length.
  3. It has brass handles on either side.
  4. It is divided into 100 links so that each link is 19.8cm or 7.92ins.
  5. A link is the distance from the middle of the central ring to the middle of the next central ring.
  6. The chain is entirely metallic.
  • To serve as a distance measuring device used for land surveys.

Specimen C – Ranging Pole

  1. A ranging Pole is made of wood or metal.
  2. It is of varying lengths e.g., 1.8m, 2.4m, or 3.0m
  3. It is generally circular in section, though some octagonal types are obtainable.
  4. It is usually painted black, bright red, and white to enable it to be seen from a distance.
  5. It has a pointed end.
  • It is used for marking stations.
  • It is also used for making straight lines.

Specimen D – Peg (Also known as Arrow or Pin)

  1. These are thin pointed steel wires about 30cm long with one end curved into a ring.
  2. A red cloth is normally attached to the ring so that it can be seen from afar.
  • It is used during chaining for marking off-chain lengths as measured.
  • It can also be used for marking stations.

Maintenance of those Surveying Instruments.

  1. They must be cleaned after use.
  2. Keep instruments in dry and cool places.
  3. Those metal parts should be oiled or greased or painted before they are put away for a long time.
  4. Replace worn-out parts.
  5. Keep instruments away from heat and rain to prevent damage and rusting respectively.

Take note of this

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