Template:RailGauge

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This template uses Lua:

This template accepts a RailGauge and returns that defined RailGauge well formatted, plus the converted size value by another unit:

{{RailGauge|1520 mm}} → 1,520 mm (4 ft 11 ²⁷⁄₃₂ in)
{{RailGauge|4 ft}} → 4 ft (1,219 mm)

Extra options are available:

{{RailGauge|1520 mm|lk=on}} → 1,520 mm (4 ft 11 ²⁷⁄₃₂ in)
{{RailGauge|1520 mm|al=on}} → 1,520 mm (4 ft 11 ²⁷⁄₃₂ in) Russian gauge
{{RailGauge|1520 mm|allk=on}} → 1,520 mm (4 ft 11 ²⁷⁄₃₂ in) Russian gauge

Input options

The first parameter specifies the gauge:

{{RailGauge|1435 mm}} → 1,435 mm (4 ft 8 ¹⁄₂ in)
{{RailGauge|4 ft 8.5 in}} → 4 ft 8 ¹⁄₂ in (1,435 mm)
{{RailGauge|4 ft 8 1/2 in}} → 4 ft 8 ¹⁄₂ in (1,435 mm)
{{RailGauge|56.5 in}} → 4 ft 8 ¹⁄₂ in (1,435 mm)
{{RailGauge|Standard gauge}} → 1,435 mm (4 ft 8 ¹⁄₂ in)

Rail RailGauges can be entered as they are defined: in units mm or ft in. Also common accepted names can be used, see below.

The input value (a length, in metric or imperial units) must be a defined RailGauge. Currently 137 gauges are defined by metric units, and 136 by imperial units. Some are defined in both unit sytems, in both, such as the standard gauge.

When an input value is not recognised by the template, the template simply returns the input as it is: {{RailGauge|25in}} → 25in

The page with this unknown input is also listed in a maintenance category, in the background, that signals interested editors that there is a new rail gauge used in Wikipedia. More on this below.

Some gauges in metric are defined in metres: 1 m is recognised. However, it is not available for all metric defined gauges. Using mm is a safer bet.

List of defined RailGauges

Template:RailGauge/doc/input options

Formatting input

When entering a RailGauge (like {{RailGauge|1435mm}}, these are formatting options. Keep in mind that only defined gauges are recognised.

Spacing is free, and fractions can be used in imperial units. Primes (' and ") may be used for [foot, inch]. Any [foot, inch] size can be entered in all-inches (4 ft 8 1/2 in equals 56 1/2 in and 56.5 in).

Input options, examples
Parameter input	Result	Note
`1435 mm`	1,435 mm (4 ft 8 ¹⁄₂ in)	standard gauge
`standard gauge`	1,435 mm (4 ft 8 ¹⁄₂ in)	standard gauge, by name
`4 ft 8.5 in`	4 ft 8 ¹⁄₂ in (1,435 mm)	standard gauge, this way puts imperial units first
`UK sg`	4 ft 8 ¹⁄₂ in (1,435 mm)	standard gauge, this way puts imperial units first
`56.5 in`	4 ft 8 ¹⁄₂ in (1,435 mm)	standard gauge, by all-inches
`56.5"`	4 ft 8 ¹⁄₂ in (1,435 mm)	standard gauge, using primes
`56 1/2 in`	4 ft 8 ¹⁄₂ in (1,435 mm)	standard gauge, using slash for fraction
`1 m`	1,000 mm (3 ft 3 ³⁄₈ in)	1 m is recognised, but not many more in `m`. Better use `mm`
`16.5 mm`	16.5 mm (0.65 in)	HO scale model railway
`16.5 in`	16 ¹⁄₂ in (419 mm)	Miniature railway
`7 ft 0.25 in`	7 ft ¹⁄₄ in (2,140 mm)	Brunel
`2140 mm`	2140 mm	Not recognised (so no converted value). This RailGauge, Brunel's, is not defined in mm.
`65 in`	65 in	Input not recognised (so no converted value); output copies the input. This is a good way to enter an uncovered rail gauge on a page: other editors will notice (and can add a new gauge to the template!).

Parameters

{{RailGauge
|
| lk=on
| first=imp, met
| disp= s, /, 1, br, [], <any literal text>
| al=on
| allk=on
| nowrap=off (default), on, all
| addcat=no
| unitlink=on
}}

Optional parameters
Parameter	What it does	Example (code)	Example (output)
lk=on	Links the defining measure (first measure) "defined size" depends on input	`{{RailGauge\|3ft6in\|lk=on}}` `{{RailGauge\|1067mm\|lk=on}}`	3 ft 6 in (1,067 mm) 1,067 mm (3 ft 6 in)
al=on	Adds the alternate name after the gauge measurement values	`{{RailGauge\|sg\|al=on}}`	1,435 mm (4 ft 8 ¹⁄₂ in) standard gauge
allk=on	Adds a wikilink to the alternate name where applicable	`{{RailGauge\|sg\|allk=on}}`	1,435 mm (4 ft 8 ¹⁄₂ in) standard gauge
first=imp first=met	Puts the requested measure first (metric, imperial)	`{{RailGauge\|1000mm\|first=imp}}`	3 ft 3 ³⁄₈ in (1,000 mm)
disp=any text	The text will be written between the measurements, two spaces added. Brackets are omitted. Text must be 2 characters or more. (codes for `\|disp=` are processed as described: 1, s, /, br).	`{{RailGauge\|sg\|disp=also defined as being}}`	1,435 mm also defined as being 4 ft 8 ¹⁄₂ in
disp=s or /	Uses a slash as a separator rather than parentheses	`{{RailGauge\|sg\|disp=s}}`	1,435 mm/4 ft 8 ¹⁄₂ in
disp=[]	Uses a square brackets rather than parentheses	`{{RailGauge\|sg\|disp=[]}}`	1,435 mm [4 ft 8 ¹⁄₂ in]
disp=1	Only shows the first measure (may be used when repeated on a page or in conjunction with `first=` to display the output only)	`{{RailGauge\|sg\|disp=1}}`	1,435 mm
disp=br	Forces a line break after the first size (and also before any gauge name)	`{{RailGauge\|sg\|disp=br}}`	1,435 mm (4 ft 8 ¹⁄₂ in)
nowrap=off (default), on, all	Sets possible line break (line wrap): after between the measurements (off=defalt), not (on, all), or not at all when named gauge is present. (note: until May 2014, default behaviour was no break between the measurements. This has changed.)	`{{RailGauge\|sg\|nowrap=on}}`	1,435 mm (4 ft 8 ¹⁄₂ in)
addcat=no	Will not add a maintenance category	`{{RailGauge\|sg\|addcat=no}}`	1,435 mm (4 ft 8 ¹⁄₂ in)
unitlink=on	Adds wikilinks to the measurement unit labels	`{{RailGauge\|sg\|unitlink=on}}`	1,435 mm (4 ft 8 ¹⁄₂ in)

Names can be universal, being defined worldwide. For example: Iberian gauge, 1,668 mm (5 ft 5 ²¹⁄₃₂ in) Iberian gauge. Other names can be localor culturally restricted, for example the name "Cape gauge" is used in South Africa for 3 ft 6 in (1,067 mm), but not in Japan (in Japan that same track gaugfe is not named).
Also, two sizes can lead to one gauge name.

Named gauges

Established gauge names can be entered. The word "gauge" can be omitted. Case-insensitive (A=a). See also the |al=, |allk= parameters (below), to show a gauge name in the outcome.

Input	Result	Note
{{RailGauge\|Baltimore gauge\|al=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge
{{RailGauge\|Baltimore\|al=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge	Omitting " gauge", same effect
{{RailGauge\|baltimore\|al=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge	Case-insensitive (A=a)
{{RailGauge\|baltimore\|al=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge	`\|al=on` shows the alternative (name)
{{RailGauge\|baltimore\|allk=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge	`\|allk=on` shows the alternative (name), linked
{{RailGauge\|baltimore\|lk=on\|al=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge	`\|lk=on` links the size (as always)
{{RailGauge\|Baltimore streetcar gauge\|al=on}}	5 ft 4 ¹⁄₂ in (1,638 mm) Baltimore streetcar gauge	This one has more names
{{RailGauge\|Bosnian\|al=on}}	760 mm (2 ft 5 ¹⁵⁄₁₆ in) Bosnian gauge
{{RailGauge\|Brunel\|al=on}}	7 ft (2,134 mm) Brunel gauge
{{RailGauge\|Cape\|al=on}}	3 ft 6 in (1,067 mm) Cape gauge
{{RailGauge\|Iberian\|al=on}}	1,668 mm (5 ft 5 ²¹⁄₃₂ in) Iberian gauge
{{RailGauge\|Indian\|al=on}}	5 ft 6 in (1,676 mm) Indian gauge
{{RailGauge\|Victorian\|al=on}}	1,600 mm (5 ft 3 in) Victorian broad gauge
{{RailGauge\|Irish\|al=on}}	5 ft 3 in (1,600 mm) Irish gauge
{{RailGauge\|metre\|al=on}}	1,000 mm (3 ft 3 ³⁄₈ in) metre gauge
{{RailGauge\|Ohio\|al=on}}	4 ft 10 in (1,473 mm) Ohio gauge
{{RailGauge\|Pennsylvania\|al=on}}	5 ft 2 ¹⁄₂ in (1,588 mm) Pennsylvania trolley gauge
{{RailGauge\|Pennsylvania trolley\|al=on}}	5 ft 2 ¹⁄₂ in (1,588 mm) Pennsylvania trolley gauge
{{RailGauge\|Russian\|al=on}}	1,520 mm (4 ft 11 ²⁷⁄₃₂ in) Russian gauge
{{RailGauge\|Scotch\|al=on}}	4 ft 6 in (1,372 mm) Scotch gauge
{{RailGauge\|standard gauge\|al=on}}	1,435 mm (4 ft 8 ¹⁄₂ in) standard gauge	Also: "sg", "metsg" (metric units first)
{{RailGauge\|US sg\|al=on}}	4 ft 8 ¹⁄₂ in (1,435 mm) standard gauge	Also: "imp sg", "UK sg", "NA sg" (imperial units first)
{{RailGauge\|Swedish three foot\|al=on}}	891 mm (2 ft 11 ³⁄₃₂ in) Swedish three foot
{{RailGauge\|Swedish\|al=on}}	891 mm (2 ft 11 ³⁄₃₂ in) Swedish three foot
{{RailGauge\|Toronto\|al=on}}	4 ft 10 ⁷⁄₈ in (1,495 mm) Toronto gauge

English variant (ENGVAR)

For articles written in US-English, it is possible to set parameter |engvar=en-US. In this situation, the US-English spelling is shown (metER):

1,000 mm (3 ft 3 ³⁄₈ in) meter gauge

Why not use {{Convert}}?

To convert a RailGauge, using {{Convert}} comes to mind. For example, standard gauge:

{{Convert|1435|mm|ftin|abbr=on}} → 1,435 mm (4 ft 8.5 in)

However, this has some disadvantages. First of all, RailGauges are defined by an institute, not just measured. The list of those defined RailGauges is limited, and overseeable (today some 270 physical sizes are defined).

Using {{RailGauge}} allows us to track (follow) all articles with a specific gauge. This way the list can be made more accurate, correct and complete.

Also, the track definition can be directly linked to the sourcing article: 1,067 mm (3 ft 6 in).

Further more, the template allows to recognise named gauges such as "Russian gauge".

Tracking category

{{RailGauge}} detects that an undefined gauge is entered, and signal for maintenance. For example, metre gauge is only defined in metric. Entering an imperial size would categorise that article in Category:Articles using template 'RailGauge' with unrecognized input (0).

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:RailGauge in articles based on its TemplateData.

TemplateData for RailGauge

The template formats a RailGauge size into standard notation and adds the conversion into the imperial/metric (other) size

Template parameters[Edit template data]
Parameter		Description	Type	Status
RailGauge definition	`1`	Defined RailGauge, in mm or ft in. Also can accept: ' '', m, gauge name	String	required
Link top measurement units	`lk`	=on: adds link to the gauge defining article	String	optional
Alternative name	`al`	=on: Add gauge name (if existing)	String	optional
Alternative name, linked	`allk`	=on: Add gauge name (if existing) and link to its wiki page	String	optional
Display converted gauge	`disp`	Separator for the converted value: 1=none (first value only); =s, /: slash separator; =''Any text'' (2 or more characters): Any literal text written between the two values. Default (...) brackets	String	optional
Which unit to mention first	`first`	=met: metric first; =imp: imperial first (default: input unit) Default By input	String	optional
Allow line wrapping of text	`nowrap`	wrap=off, on, all: allows lin breaking between the two measurements. Default: on. 'all' disallows linebreaking wiothing an alternative name Default off	String	optional
Wikilink units	`unitlink`	=on: do wikilink Default	String	optional
Categorize page	`addcat`	=no: do not categorize Default yes	String	optional

External links

Sources

Light Rail Transit Association (LRTA)
Morrisson, Allen (2013). "Electric transport in latin america". Latin America is very well covered
"A world of trams and urban transit". Light Rail Transit Association (LRTA)). UK based, covering most countries

Scaled rail models

"S-3.1 Trackwork, Proto & Fine Scales". NMRA. 2004.
"S-3.2 Trackwork Standard Scales (metric)" (PDF). NMRA. 2010.

The documentation on top is transcluded from Template:RailGauge/doc.
Editors can experiment in this template's sandbox and testcases pages.
Add categories to the /doc subpage. Subpages of this template.