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Minimum dimensions of 1:15000

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This page contains content from ISOM2000   This page contains content from Ashby Mapping    revision 01/00

- The gap between two fine lines of the same colour, in brown or black: 0.15 mm.

- The smallest gap between two blue lines: 0.25mm.

- Shortest dotted line: at least two dots.

- Shortest dashed line: at least two dashes.

- Smallest area enclosed by a dotted line: 1.5mm (diameter) with 5 dots.

- Smallest area of colour

Blue, green, grey or yellow full colour: 0.5mm˛

Black dot screen: 0.5mm˛

Blue, green or yellow dot screen: 1.0mm˛.

All features smaller than the dimensions above must be either exaggerated or omitted, depending on whether or not they are of significance to the orienteer. When a feature is enlarged, neighbouring features must be displaced so that the correct relative positions are maintained.

ISOM 1990 Definition

- The gap between two fine lines of the same colour, in brown or black: 0.15 mm.

- The smallest gap between two blue lines: 0.25mm.

- Shortest rock face symbol: 0.6mm

- Shortest stream or ditch symbol: 0.6mm.

- Smallest bend in contour (spur or reentrant): 0.25mm (from centre to centre of the lines).

- Smallest area of marsh: at least two lines with a length of 0.5mm.

- Shortest dotted line: at least two dots.

- Shortest dashed line: at least two dashes.

- Smallest area enclosed by a dotted line: 1.5mm (diameter) with 5 dots.

- Smallest area of colour

Blue, green, grey or yellow full colour: 0.5mm˛

Black dot screen: 0.5mm˛

Blue, green or yellow dot screen: 1.0mm˛.

All features smaller than the dimensions above must be either exaggerated or omitted, depending on whether or not they are of significance to the orienteer. When a feature is enlarged, neighbouring features must be displaced so that the correct relative positions are maintained.

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International Specification for Orienteering Maps produced by the International Orienteering Federation
OCAD produced by Hans Steinegger Software. © 1988-1999 Hans Steinegger. ® OCAD is a registered trademark of Hans Steinegger
This document has been written and coded by Peter Hornsby of Ashby Mapping
Apologies for any mistakes and errors; please inform details of any problems, thanks.
Produced for the Ashby Mapping internet site on 20 November 1997 and 1 December 1999  ©1997-2000 Ashby Mapping
Revised 28 December 1999, 23 March 2000