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 Flexible Folding Height Safe
RS Stock No. 387-0098
BrandRS PRO
HK$1,061.50
Each
units
300mm Imperial, Metric Stainless Steel 29mm Satin Chrome - No -
RS Stock No. 224-5390
BrandStarrett
HK$259.54
Each
units
300mm Imperial, Metric Steel 25mm Satin Chrome - - -
RS Stock No. 111-5875
BrandRS PRO
HK$100.23
Each
units
150mm Imperial, Metric Steel 19mm Satin Chrome - No -
RS Stock No. 471-5762
Mfr. Part No.27057
BrandWiha Tools
HK$60.86
Each
units
2m Metric Plastic 15mm - - Yes -
RS Stock No. 493-409
Mfr. Part No.33232
BrandWiha Tools
HK$129.39
Each
units
2m Metric Plastic 15mm - - Yes -
RS Stock No. 705-2203
Mfr. Part No.DELA.401.00
BrandFacom
HK$91.97
Each
units
2m Metric Plastic 16mm - - Yes -
RS Stock No. 513-391
Mfr. Part No.011284
BrandStabila
HK$61.61
Each
units
2m Metric Wood 16mm - - Yes -
RS Stock No. 300-6613
Mfr. Part No.DELA.1051.150
BrandFacom
HK$18.96
Each
units
150mm Metric Stainless Steel 13mm - Yes - -
RS Stock No. 304-8819
Mfr. Part No.901 300MM
HK$37.22
Each
units
300mm Metric Stainless Steel 13mm - Yes - -
RS Stock No. 910-3230
Mfr. Part No.803.200MSLS
BrandFacom
HK$116.51
Each
units
200mm Metric Stainless Steel 13mm Satin Yes - Yes
RS Stock No. 471-5778
Mfr. Part No.27062
BrandWiha Tools
HK$47.50
Each
units
1m Metric Plastic 13mm - - Yes -
RS Stock No. 387-0082
BrandRS PRO
HK$516.55
Each
units
300mm Imperial, Metric Stainless Steel 25mm Satin Chrome - No -
RS Stock No. 248-9247
BrandRS PRO
HK$515.06
Each
units
300mm - Steel 12.5mm - Yes No -
RS Stock No. 111-5882
BrandRS PRO
HK$210.00
Each
units
300mm - Steel 12.5mm - Yes No -
RS Stock No. 300-6629
Mfr. Part No.DELA.1051.200
BrandFacom
HK$26.90
Each
units
200mm Metric Stainless Steel 13mm - Yes - -
RS Stock No. 609-039
Mfr. Part No.DW8253
BrandStarrett
HK$595.98
Each
units
300mm Imperial, Metric Steel - Satin Chrome - - -
RS Stock No. 304-8803
Mfr. Part No.901 200MM
HK$22.29
Each
units
200mm Metric Stainless Steel - - Yes - -
RS Stock No. 111-5885
BrandRS PRO
HK$546.32
Each
units
600mm Imperial, Metric Steel 29mm Satin Chrome - No -
RS Stock No. 304-8780
HK$22.97
Each
units
150mm Metric Stainless Steel - - Yes - -
RS Stock No. 877-1785
BrandRS PRO
HK$830.43
Each
units
500mm Metric Steel 30mm - - No -