Technical pen

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

A technical pen is a specialized instrument used by an engineer, architect, or drafter to make lines of constant width for architectural, engineering, or technical drawings. Technical pens may use either a refillable ink reservoir or a replaceable ink cartridge.

Excerpt from the Wikipedia article “Technical pen”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Vanjagenije, CC BY-SA 3.0, via Wikimedia Commons.