View source for Jonesipedia:WikiProject Geographical coordinates/scale:

The <code>scale:</code> parameter specifies the desired [[scale (map)|map scale]] as 1:''N'', overriding the scale implied by any [[#type:T|type:]] parameter. 

[[tswiki:GeoHack|GeoHack]] uses <code>scale:</code> to select a map scale for a 72 [[Dots per inch|dpi]] computer monitor.  If no <code>dim:</code>, <code>type:</code>, or <code>scale:</code> parameters are provided, GeoHack uses its default scale of 1:300,000.

{| class="wikitable"
|+ Samples
! Subject
! Scale
! Markup
! Result
|-
|[[Big Ben]]
|align=right|1:500
|<nowiki>{{coord|51.500611|N|0.124611|W|scale:500}}</nowiki> 
|{{coord|51.500611|N|0.124611|W|scale:500}}
|-
|[[Palace of Westminster]]
|align=right|1:5,000
|<nowiki>{{coord|51.5006|N|0.1246|W|scale:5000}}</nowiki> 
|{{coord|51.5006|N|0.1246|W|scale:5000}}
|-
|[[City of Westminster]]
|align=right|1:50,000
|<nowiki>{{coord|51.501|N|0.125|W|scale:50000}}</nowiki> 
|{{coord|51.501|N|0.125|W|scale:50000}}
|-
|[[Greater London]]
|align=right|1:500,000
|<nowiki>{{coord|51.50|N|0.12|W|scale:500000}}</nowiki> 
|{{coord|51.50|N|0.12|W|scale:500000}}
|}

[[Category:WikiProject Geographical coordinates]]