Datum first, lines second
A scriber is used to mark all lines on a metal surface, and its point must remain sharp to produce well-defined lines.
A divider is used to scribe circles or arcs and to mark a series of lengths such as hole centres, and it is made from tool steel or high-carbon steel.
1. What does marking out primarily achieve on a workpiece?
2. Which description best matches a datum in marking out?
3. How should a scriber point be maintained to produce clear lines on metal?
What is marking out in machining?
Scratching lines on a workpiece surface to indicate outlines or positions.
What is a datum in measurement?
A reference point, edge, or centre line for all dimensions.
How many datums are needed to position a point on a plane surface?
Two datums are required.
At what angle are two datums usually set to position a point?
They are usually at right angles to each other.
What is the purpose of a scriber on a metal surface?
To mark all lines on a metal surface.
Why must a scriber's point remain sharp?
To produce well-defined lines.
The revision sheet covers the essential concepts of Workshop Hand Tools and Measurement. It is organized by topic to facilitate learning and memorization, with key definitions, explanations and summaries.
Read the full sheet →The quiz contains 24 multiple-choice questions with detailed corrections and explanations for each answer. Ideal for testing your knowledge and identifying gaps.
Take the quiz (24 questions) →Revizly offers 56 interactive flashcards on Workshop Hand Tools and Measurement. Each card presents a question on the front and the answer on the back, enabling active and effective revision based on spaced repetition.
See all 56 flashcards →Import your PDF or paste your course, AI generates sheets, quizzes and flashcards in 30 seconds.