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Question

Which tool is primarily used to create straight layout lines on metal surfaces?

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is

Scriber with steel rule

Marking out, or layout, means drawing accurate reference lines on a metal workpiece before it is cut, filed or machined.

The tool used must scratch a fine, permanent line and be guided so that the line comes out straight and correctly placed.

A scriber has a hard, sharp point that scores a clear line into the metal surface, and a steel rule provides a straight edge to guide it.

Running the scriber along the steel rule therefore produces a straight, accurately positioned layout line, making this pair the right choice.

An outside micrometer and a vernier caliper are measuring instruments for sizes, and a try square only checks or marks squareness, so they are not primarily line-drawing tools.

A centre punch with a hammer only makes a small dot to locate a hole or start a drill, not a continuous straight line.

Hence, the answer is Scriber with steel rule.

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Similar Questions

  1. A fitter is tasked with marking accurate parallel lines on a metal plate before cutting. He must select a divider with tips made of a suitable material for this job. Which divider tip material would be most appropriate to use to avoid rapid wear and ensure precise marking on the metal surface?

  2. In a workshop, a mechanic needs to determine the length of the diagonal support for a rectangular metal plate with sides of 9 cm and 12 cm. Which value represents the correct length of the diagonal support needed?

  3. Why is centre punching necessary on curved or cylindrical surfaces?

  4. Which operation most benefits from using a V-block with a clamp?

  5. In marking operations, a V-block is mainly used to:

  6. Why are V-blocks often used in pairs when supporting long cylindrical workpieces?

  7. Which tool is most appropriate for marking parts before removing them during diesel engine dismantling to ensure correct reassembly?

  8. If a flat chisel is used instead of a center punch before drilling, what problem might occur?

  9. Which of the following is a correct use of a centre punch during layout work?

  10. A student marks a line with a scriber, but the line is barely visible. What might be the most likely cause?


Important Questions from Marking and Marking Tools

  1. What is the point angle of prick punch which is used for making light punch marks?

  2. The point angle of scriber is

  3. The angle of the punch used for witness marks is

  4. A fitter is tasked with marking accurate parallel lines on a metal plate before cutting. He must select a divider with tips made of a suitable material for this job. Which divider tip material would be most appropriate to use to avoid rapid wear and ensure precise marking on the metal surface?

  5. In a workshop, a mechanic needs to determine the length of the diagonal support for a rectangular metal plate with sides of 9 cm and 12 cm. Which value represents the correct length of the diagonal support needed?

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