See also...1:10 000 ISOM Index Symbols Index previous next
revision 01/00
The scale of the map should be displayed as a proportion such as 1:15 000.
Scale additionally may be indicated by a scale bar.
The scale for an orienteering map is 1:15000 with a 5m contour interval. Terrain that cannot be fieldworked at a scale of 1:7500 and legibly presented at a scale of 1:15 000, is not suitable for international fot-orienteering.
Maps at 1:10 000 may be produced for relay and short distance competitions. The scale of 1:10 000 is recommendered for older age groups (45 and above) where reading fine lines and small symbols may cause problems for younger age groups (age classes 16 and below) where the capacity of reading complex maps is not fully developed.
Maps at 1:10 000 must be drawn with lines, line screens and symbol dimensions 50% greater than those used for 1:15 0000.
Where practical the same dot screens as used at 1:15 000 will give the most legible map and therefore to be preferred.
In education there is usually a progression of scales from 1:2 500 to 1:5 000 to 1:10 000. Maps at very large scales such as 1:2 500 will clearly contain additional detail such as playground equipment. Line dimensions for these maps should also be enlartged by 50%.
Other scales may be produced for other forms of orienteering.
For practical reasons a map should not be larger than is necessary for the orienteering competition.
Maps larger the A3 shold be avoided.
A3 is 420mm x 297mm
Maps at 1:10000 may be produced for two reasons,
(a) for greater legibility, or
(b) for special types of terrain.
There is a 1:10000 maps topic, for details of enlarged maps.
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