Metric Units
   Metric Conversions
   Metrics in Drafting
     Paper Sizes
     Drawing Sheet Layout
     Pen Sizes
        and Line Types

   • Scales
   Metrics in Engineering
   Metrics in Clothing
   Metrics in the Home
   Metric Products
                and Information

   Metric Converter Apps
on selected platforms
For more, visit
my main website:

Copyright © 2002-2014
Digital Design Ltd.

Site Map

Bookmark & Share: Add to Favorites Share on Facebook Tweet This E-Mail a Friend Print this Page

Click here for details ...


The scales recommended for use with the metric system are:

Actual Size:
  • 1:1


  • 1:2
  • 1:2.5
  • 1:5
  • 1:10


  • 2:1
  • 5:1
  • 10:1

Decimal multiples of these base scales are also used. eg. 1:100, 1:250, 20:1

Indication of Scale

The scale should normally be noted in the title block of a drawing.

When more than one scale is used they should be shown close to the views to which they refer, and the title block should read 'scales as shown'.

If a drawing uses predominantly one scale it should be noted in the title block together with the wording 'or as shown'.