Rulers

A ruler, also known as a rule, is a flat, straightedge measuring instrument with equally marked spacing etched or moulded along its length. The spacing forms a measuring scale of either metric or imperial measurements, which are usually in increments of centimetres (cm) and millimetres (mm) and inches (sometimes denoted as ") respectively. Rulers are used to measure the length of an object or its edge precisely and as a guide for drawing or scoring straight lines. Some rulers have measurements on both sides. The edges of rulers are often bevelled to reduce measurement errors.

Who uses rulers?

The better question may be 'who doesn't?' Rulers are used everywhere, from schools and offices to within the home and in a wide range of occupations. They are prevalent is particular fields of study including geometry, printing, technical drawing, architecture, building and engineering.

What are the different types of ruler?

Rulers are made from durable materials like wood, plastic or metal. These materials are hard wearing and are usually shatter resistant and scratch proof as they are made to last a long time.

  • Transparent plastic rulers allow an unobstructed view of the surface underneath for precise measuring and drawing.
  • Stainless steel rulers or an aluminium ruler is very durable and are ideal for use in a workshop. These steel rules often have a satin chrome anti-glare finish for clear visibility of the scale.
  • Wooden rulers are ideal for use at home or in schools, as the wood has a smooth surface, is clear to read and won't split.
  • Flexible rulers or tape measures, are ideal for determining the dimensions of objects with curves and angles. They are able to bend and flex to measure an exact circumference, length, width or height.
  • Machinist's rulers are made from steel and are usually a 6 inch ruler. The imperial machinist scale ruler is divided into increments of 1/10 inch. The metric machinist ruler is divided into millimetres or half-millimetre increments, allowing small, precise measurements to be taken with accuracy.

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Description Price Length Imperial or Metric Material Width Finish Calibrated Flexible Folding Height Safe
RS Stock No. 120-1282
Mfr. Part No.T3530 12
BrandCK
€11.80
Each
units
300mm Imperial, Metric Stainless Steel 29.5mm - - Yes - -
RS Stock No. 192-5910
Mfr. Part No.T3530 12
BrandCK
€48.50
Each
units
12 in, 300 mm Imperial, Metric Stainless Steel 29.5mm - UKAS Yes - -
RS Stock No. 121-8201
BrandRS PRO
€53.46
Each
units
150mm - Steel 19mm Satin Chrome UKAS - No -
RS Stock No. 111-5875
BrandRS PRO
€10.46
Each
units
150mm Imperial, Metric Steel 19mm Satin Chrome - - No -
RS Stock No. 300-6613
Mfr. Part No.DELA.1051.150
BrandFacom
€1.70
Each
units
150mm Metric Stainless Steel 13mm - - Yes - -
RS Stock No. 192-5912
Mfr. Part No.DELA.1051.150
BrandFacom
€44.70
Each
units
150mm Metric Stainless Steel 13mm - UKAS Yes - -
RS Stock No. 304-8780
€2.89
Each
units
150mm Metric Stainless Steel - - - Yes - -
RS Stock No. 192-5918
€45.82
Each
units
150mm Metric Stainless Steel - - UKAS Yes - -
RS Stock No. 304-8819
Mfr. Part No.901 300MM
€3.13
Each
units
300mm Metric Stainless Steel 13mm - - Yes - -
RS Stock No. 111-5876
BrandRS PRO
€18.06
Each
units
300mm Imperial, Metric Steel 25mm Satin Chrome - - No -
RS Stock No. 192-5919
Mfr. Part No.901 300MM
€46.45
Each
units
300mm Metric Stainless Steel 13mm - UKAS Yes - -
RS Stock No. 121-8202
BrandRS PRO
€61.06
Each
units
300mm - Steel 25mm Satin Chrome UKAS - No -
RS Stock No. 224-5384
Mfr. Part No.DY481
BrandStarrett
€17.32
Each
units
150mm Imperial, Metric Steel 18.98mm Satin Chrome - - - -
RS Stock No. 450-1399
Mfr. Part No.DY481
BrandStarrett
€54.29
Each
units
- - Steel 18.98mm Satin Chrome UKAS - - -
RS Stock No. 300-6641
Mfr. Part No.DELA.1051.300
BrandFacom
€3.03
Each
units
300mm Metric Stainless Steel 13mm - - Yes - -
RS Stock No. 192-5909
Mfr. Part No.DELA.1051.300
BrandFacom
€46.03
Each
units
300mm Metric Stainless Steel 13mm - UKAS Yes - -
RS Stock No. 304-8831
Mfr. Part No.901 1000MM
€16.87
Each
units
1m Metric Stainless Steel - - - Yes - -
RS Stock No. 192-5914
Mfr. Part No.901 1000MM
€77.77
Each
units
1m Metric Stainless Steel - - UKAS Yes - -
RS Stock No. 121-8203
BrandRS PRO
€53.81
Each
units
150mm - Steel 12.5mm Satin Chrome UKAS Yes No -
RS Stock No. 224-8620
Mfr. Part No.DY466
BrandStarrett
€27.08
Each
units
300mm Metric Steel 25mm Satin Chrome - - - -