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A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length
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.
Sparco Standard Metric Ruler - 12" Length 1.33" Width - 1/16 Graduations - Metric, Imperial Measuring System - Plastic - 1 Each - Clear.
The materials used to make the ruler are very simple, a wood ruler is made of wood as the body of the ruler. The markings are etched on with an ink or paint like substance on to the wood. There are also some wooden rulers that have lacquer coating to make the wood more smooth and safe.