Steel Scale And Measuring tape

Dec 13, 2025

Deepak Choudhary

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A steel scale is a single-piece linear measuring instrument. It usually indicates two units: centimetres (cm) and inches, with centimetre divisions on one side and inch divisions on the other.

A steel scale is used to measure simple linear dimensions in one direction. The least count of a standard steel scale is 1 mm. It is mainly used for quick comparison and measurements where high precision is not required.

When linear measurements of length are to be made, scales are used.

A scale (or ruler) is a long, rectangular tool with straight edges and corners that provides accurate measurement over a surface in one dimension.

Units

Scales measure length in SI units such as millimetre (mm), centimetre (cm), and kilometre (km).

The scale generally has two divisions:

Upper division: centimetres (cm) and millimetres (mm)
Lower division: inches

One inch is equal to 2.54 cm.

Scales are also used to draw straight lines and for marking out.

Depending on their size, scales are lightweight and portable. They are commonly made of plastic, glass, steel, or wood, with graduations engraved or printed on the surface.

Scales are widely used in almost every profession. Their primary purpose is to draw geometric figures and straight lines.

Based on size and application, scales are classified according to their usage and the area or surface to be measured. The most common standard sizes are 15 cm (medium) and 30 cm (long).

Based on professional use, scales are further classified into architect’s scales and engineering scales.

Uses

Architect’s scales are used for preparing building plans.
Engineering scales are used in engineering drawing and graphics.

A scale is also a technical drafting tool used to represent large areas on a smaller scale in drawings and plans. It helps convert 2D and 3D views into accurate 1D measurements on paper.

Scales are cost-effective, easily available, and simple to use.

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