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Locating with variable hole diameters: pressure-type locator choice If the hole diameter varies considerably between parts, which pressure-type locator is preferred in jigs/fixtures for locating through the hole? Choose the best option.

Difficulty: Medium

Conical locator
Cylindrical locator
Diamond pin locator
Vee locator

Correct Answer: Conical locator

Explanation:

Concept
A conical locator (often spring-loaded/pressure type) can accommodate reasonable hole size variations while still centering the part. Cylindrical pins need tight hole tolerance; diamond pins relieve one direction for repeatability, not size variation; vee locators suit cylindrical external surfaces.

Final Answer
Conical locator.

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