Scale ruler

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

1

In collections

Nobody has pulled it yet.

What Wikipedia says

A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length; two common examples are an architect's scale and engineer's scale. In scientific and engineering terminology, a device to measure linear distance and create proportional linear measurements is called a scale.

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

Image: Foto: Deutsches Museum / Konrad Rainer, CC BY-SA 4.0, CC BY-SA 4.0, via Wikimedia Commons.