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Difficulty: MediumStandard Measurement and Layout Tools

A metalworker needs to scribe a line parallel to the true edge of a flat plate at a preset distance. Which standard layout tool features one pointed scribing leg and one bent leg designed to ride along the edge of the workpiece?

  1. A
    Outside caliper
  2. Hermaphrodite caliperAnswer
  3. C
    Trammel points
  4. D
    Spring dividers

Answer

Hermaphrodite caliper
The hermaphrodite caliper (also called an odd-leg caliper) is specially manufactured with one curved or bent leg that acts as a guide against the edge of a workpiece and one straight pointed leg that scribes a clean line exactly parallel to that reference edge.

Step-by-Step Solution

1
Identify the specific mechanical requirement of the layout task.
The task requires guiding a tool along a finished reference edge while simultaneously scribing a line at a constant parallel offset.
Selecting the correct workshop layout tool depends on matching its physical geometry to the referencing and marking requirements.
2
Evaluate standard layout tool configurations against the task requirements.
A hermaphrodite caliper (odd-leg caliper) has one bent leg that hooks against a reference edge and one straight pointed leg that scribes parallel to that edge.
Standard dividers and outside calipers lack the hooked guide leg required to maintain a consistent offset along an edge.

Key Concept

Identification and proper application of layout and scribing tools for parallel edge marking
Estimated Time:1m 0s
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Topics

Standard Measurement and Layout Tools

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