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.

...
Read more Read less

Filters

Viewing 1 - 20 of 102 products
Results per page
Description Price Length Imperial or Metric Material Width Finish Calibrated Flexible Folding Height Safe
RS Stock No. 121-8201
BrandRS PRO
€53.20
Each
units
150mm - Steel 19mm Satin Chrome UKAS - No -
RS Stock No. 111-5875
BrandRS PRO
€10.20
Each
units
150mm Imperial, Metric Steel 19mm Satin Chrome - - No -
RS Stock No. 121-8202
BrandRS PRO
€60.62
Each
units
300mm - Steel 25mm Satin Chrome UKAS - No -
RS Stock No. 111-5876
BrandRS PRO
€17.62
Each
units
300mm Imperial, Metric Steel 25mm Satin Chrome - - No -
RS Stock No. 111-5877
BrandRS PRO
€10.54
Each
units
150mm Imperial, Metric Steel 12.5mm Satin Chrome - Yes No -
RS Stock No. 121-8203
BrandRS PRO
€53.54
Each
units
150mm - Steel 12.5mm Satin Chrome UKAS Yes No -
RS Stock No. 121-8210
BrandRS PRO
€94.71
Each
units
600mm - Steel 25mm Satin Chrome UKAS - No -
RS Stock No. 111-5884
BrandRS PRO
€51.71
Each
units
600mm Imperial, Metric Steel 25mm Satin Chrome - - No -
RS Stock No. 111-5881
BrandRS PRO
€13.00
Each
units
150mm Imperial, Metric Steel 12.5mm - - Yes No -
RS Stock No. 121-8207
BrandRS PRO
€56.00
Each
units
150mm - Steel 12.5mm - UKAS Yes No -
RS Stock No. 877-1797
BrandRS PRO
€167.42
Each
units
1m Metric Steel 40mm - - - No -
RS Stock No. 111-5878
BrandRS PRO
€17.91
Each
units
300mm - Steel 12.5mm Satin Chrome - Yes No -
RS Stock No. 121-8204
BrandRS PRO
€60.91
Each
units
300mm - Steel 12.5mm Satin Chrome UKAS Yes No -
RS Stock No. 877-1785
BrandRS PRO
€85.66
Each
units
500mm Metric Steel 30mm - - - No -
RS Stock No. 121-8211
BrandRS PRO
€98.61
Each
units
600mm - Steel 29mm Satin Chrome UKAS - No -
RS Stock No. 450-1541
BrandRS PRO
€73.34
Each
units
- - Steel 19mm - UKAS - No -
RS Stock No. 121-8212
BrandRS PRO
€181.08
Each
units
900mm - Steel 32mm Satin Chrome UKAS - No -
RS Stock No. 111-5886
BrandRS PRO
€138.08
Each
units
900mm Imperial, Metric Steel 32mm Satin Chrome - - No -
RS Stock No. 111-5885
BrandRS PRO
€55.61
Each
units
600mm Imperial, Metric Steel 29mm Satin Chrome - - No -
RS Stock No. 248-9203
BrandRS PRO
€30.34
Each
units
150mm Imperial, Metric Steel 19mm - - - No -
Related Products
Every part of the set is available separately, ...
Description:
Every part of the set is available separately, and the heads locate, slide and lock on to the rule to give precise squaring, centring and angular alignment with respect to the rule edge Instructions are supplied with each part.,Rule: 11 ...
The Mitutoyo stainless steel ruler with UKAS calibration ...
Description:
The Mitutoyo stainless steel ruler with UKAS calibration is 1m long and 15875m wide. Engraved on front side only Accuracy is 0.2mm/-0.01mm Metric graduations at 0.5mm and 1mm intervals Imperial graduations at 1/64in, 1/32in and 1/21in intervals Semi-flexible rule.
The Kleffmann & Weese stainless steel ruler is ...
Description:
The Kleffmann & Weese stainless steel ruler is 300mm long and 13mm wide This ruler has hardened spring band stainless steel construction that provides flexibility and corrosion resistance and long life. Hardened spring band steel StainlessGrading: mm / 1/2 mm. ...
Titanium Nitride coated steel rules with paint filled ...
Description:
Titanium Nitride coated steel rules with paint filled engraved graduations,These rules are extremely hard wearing, low glare and high contrast measurement.,All rules have "D" ends and are available as rigid or flexible.