Template:GravEngAbs: Difference between revisions

Content deleted Content added

Inline

Latest revision as of 17:27, 3 July 2021

Three approaches to units of mass and force or weight^[1]^[2]
v t e Base	Force		Weight		Mass
2nd law of motion	$m = .mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}⁠F/a⁠$		$F = ⁠ W \cdot a / g ⁠$		$F = m \cdot a$
System	BG	GM	EE	M	AE	CGS	MTS	SI
Acceleration (a)	ft/s²	m/s²	ft/s²	m/s²	ft/s²	Gal	m/s²	m/s²
Mass (m)	slug	hyl	pound-mass	kilogram	pound	gram	tonne	kilogram
Force (F), weight (W)	pound	kilopond	pound-force	kilopond	poundal	dyne	sthène	newton
Pressure (p)	pound per square inch	technical atmosphere	pound-force per square inch	standard atmosphere	poundal per square foot	barye	pieze	pascal

^ Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028.
^ Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant g_c". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010.

Template documentation[view] [edit] [history] [purge]

Usage

Table of the three approaches to mass, force and weight in measurement systems.

Template parameters[Edit template data]
Parameter		Description	Type	Status
Systems to show	`system`	This parameter allows to restrict the table to either ‘metric’ or ‘English’ units, ‘both’ are shown by default. Default both Example English, FPS, US, SI, metric	Line	optional
Show unit symbols	`symbols`	This parameter if set to anything replaces the unit names by their symbols. Example on, yes, true, 1	Line	optional

See the /testcases subpage for the results of the system parameter.

Examples

{{GravEngAbs|system=English|symbols=true}}

Three approaches to English units of mass and force or weight^[1]^[2]
v t e Base	Force	Weight	Mass
2nd law of motion	$m = ⁠ F / a ⁠$	$F = ⁠ W \cdot a / g ⁠$	$F = m \cdot a$
System	British Gravitational (BG)	English Engineering (EE)	Absolute English (AE)
Acceleration (a)	ft/s²	ft/s²	ft/s²
Mass (m)	slug	lb_m	lb
Force (F), weight (W)	lb	lb_F	pdl
Pressure (p)	lb/in²	psi	pdl/ft²

{{GravEngAbs|system=metric|symbols=true}}

Three approaches to metric units of mass and force or weight^[3]^[4]
v t e Base	Force	Weight	Mass
2nd law of motion	$m = ⁠ F / a ⁠$	$F = ⁠ W \cdot a / g ⁠$	$F = m \cdot a$
System	GM	M	CGS	MTS	SI
Acceleration (a)	m/s²	m/s²	Gal	m/s²	m/s²
Mass (m)	hyl	kg	g	t	kg
Force (F), weight (W)	kp	kp	dyn	sn	N
Pressure (p)	at	atm	Ba	pz	Pa

Labels

System names
Abbreviation	Name
BG	British Gravitational System
GM	Gravitational metric system
EE	English Engineering Units
M	Metric system
AE	Absolute English System
CGS	centimetre–gram–second system of units
MTS	metre–tonne–second system of units
SI	International System of Units (French: Système international)

Previous, inappropriate designations
Mass	Force	Weight
science	engineering
scientific	technical	colloquial
absolute		gravitational
coherent		incoherent

The template table previously included rows that provided common labels or descriptions for the three approaches, as seen in this table. (Note that columns are not in the same order as in the template itself.) This was deemed inappropriate and should be discussed in surrounding prose where necessary.

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

^ Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028.
^ Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant g_c". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010.
^ Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028.
^ Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant g_c". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010.

[1] Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028.

[2] Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant g_c". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010.

[3] Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028.

[4] Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant g_c". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010.

[5] Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028.

[6] Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant g_c". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010.

[1]

[2]

[1]

[2]

[3]

[4]

@@ Line 1: / Line 1: @@
 {| class="wikitable"
+|+ Three approaches to {{{system|}}} units of mass and force or weight<ref>{{cite journal
-|+ Three approaches to {{{system|}}} mass and force<!-- and pressure--> units<ref name="lindeburg">{{citation|last=Lindeburg|first=Michael|title=Civil Engineering Reference Manual for the PE Exam}}</ref><ref name="wurbs">{{citation|last=Wurbs|first=Ralph A|title=Fort Hood Review Sessions for Professional Engineering Exam|url=http://engineeringregistration.tamu.edu/tapedreviews/Fluids-PE/PDF/Fluids-PE.pdf|accessdate=October 26, 2011}}</ref>
+|last=Comings|first=E. W.
-! {{Navbar|GravEngAbs|mini=1}}Base <!--units-->
+|title=English Engineering Units and Their Dimensions|journal=Industrial & Engineering Chemistry
-!colspan={{#if:{{{system|}}}|1|2}}| force, length, time
+|date=1940|volume=32|issue=7|pages=984–987
-!colspan={{#if:{{{system|}}}|1|2}}| weight, length, time
+|doi=10.1021/ie50367a028
-!colspan={{#switch:{{{system|}}}|English|Imperial|US|FPS=1|international|metric|SI=3|#default|=4}}| mass, length, time
+}}</ref><ref>{{cite journal
+|last=Klinkenberg|first=Adrian
+|title=The American Engineering System of Units and Its Dimensional Constant g{{sub|c}}|journal=Industrial & Engineering Chemistry
+|date=1969|volume=61|issue=4|pages=53–59
+|doi=10.1021/ie50712a010
+}}</ref>
+!span="col"| {{Navbar|GravEngAbs|mini=1}} Base
+!span="col" colspan={{#if:{{{system|}}}|1|2}} title="force, length, time: gravitational or technical"| Force
+!span="col" colspan={{#if:{{{system|}}}|1|2}} title="weight, length, time: engineering"| Weight
+!span="col" colspan={{#switch:{{{system|}}}|English|Imperial|US|FPS=1|international|metric|SI=3|#default|=4}} title="mass, length, time: absolute or dynamical"| Mass
 |-
-! [[Newton’s laws of motion|Force]] (''F'')
+!span="col" | [[Newton's laws of motion|2nd law of motion]]
-|colspan={{#if:{{{system|}}}|1|2}}| {{math|'' F {{=}} m·a {{=}} w·{{sfrac|a|g}} ''}}
+!span="col" colspan={{#if:{{{system|}}}|1|2}}| {{math|1=''m'' = {{sfrac|''F''|''a''}}}}
-|colspan={{#if:{{{system|}}}|1|2}}| {{math|'' F {{=}} m·{{sfrac|a|g<sub>c</sub>}} {{=}} w·{{sfrac|a|g}} ''}}
+!span="col" colspan={{#if:{{{system|}}}|1|2}}| {{math|1=''F'' = {{sfrac|''W'' &sdot; ''a''|''g''}}}}
-|colspan={{#switch:{{{system|}}}|English|Imperial|US|FPS=1|international|metric|SI=3|#default|=4}}| {{math|'' F {{=}} m·a {{=}} w·{{sfrac|a|g}} ''}}
+!span="col" colspan={{#switch:{{{system|}}}|English|Imperial|US|FPS=1|international|metric|SI=3|#default|=4}}| {{math|1=''F'' = ''m'' &sdot; ''a''}}
 |-
+!span="col" | System
-! Weight (''w'')
+!span="col" width="{{#if:{{{system|}}}|28%|14%}}"| {{#switch:{{{system|}}}|English|Imperial|US|FPS=[[British Gravitational System|British Gravitational (BG)]]|=[[British Gravitational System|BG]]}} {{#if:{{{system|}}}||!!width="14%"{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=[[Gravitational metric system|GM]]}}
-|colspan={{#if:{{{system|}}}|1|2}}| {{math|'' w {{=}} m·g ''}}
+!span="col" width="{{#if:{{{system|}}}|28%|14%}}"| {{#switch:{{{system|}}}|English|Imperial|US|FPS=[[English Engineering Units|English Engineering (EE)]]|=[[English Engineering Units|EE]]}} {{#if:{{{system|}}}||!!width="14%"{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=[[Metric system|M]]<!--name?-->}}
-|colspan={{#if:{{{system|}}}|1|2}}| {{math|'' w {{=}} m·{{sfrac|g|g<sub>c</sub>}} ≈ m ''}}
+!span="col"  {{#switch:{{{system|}}}|English|Imperial|US|FPS=width{{=}}"28%"{{!}} [[Absolute English System|Absolute English (AE)]]|=width{{=}}"7%"{{!}} [[Absolute English System|AE]]}} {{#if:{{{system|}}}||!!}} {{#switch:{{{system|}}}|international|metric|SI|=width{{=}}"{{#if:{{{system|}}}|9%|7%}}"{{!}} [[centimetre–gram–second system of units|CGS]] {{!}}{{!}}width{{=}}"{{#if:{{{system|}}}|9%|7%}}"{{!}} [[metre–tonne–second system of units|MTS]] {{!}}{{!}}width{{=}}"{{#if:{{{system|}}}|9%|7%}}"{{!}} [[International System of Units|SI]]}}
-|colspan={{#switch:{{{system|}}}|English|Imperial|US|FPS=1|international|metric|SI=3|#default|=4}}| {{math|'' w {{=}} m·g ''}}
 |-
+!scope="row"| [[Acceleration]] (''a'')
-! System
-!width="{{#if:{{{system|}}}|28%|14%}}"| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=[[British Gravitational System|BG]]}} {{#if:{{{system|}}}||!!width="14%"{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=[[Gravitational metric system|GM]]}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=ft/s{{sup|2}}}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=m/s{{sup|2}}}}
-!width="{{#if:{{{system|}}}|28%|14%}}"| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=[[English Engineering Units|EE]]}} {{#if:{{{system|}}}||!!width="14%"{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=[[Metric system|M]]<!--name?-->}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=ft/s{{sup|2}}}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=m/s{{sup|2}}}}
-! {{#switch:{{{system|}}}|English|Imperial|US|FPS|=width{{=}}"{{#if:{{{system|}}}|28%|7%}}"{{!}} [[Absolute English System|AE]]}} {{#if:{{{system|}}}||!!}} {{#switch:{{{system|}}}|international|metric|SI|=width{{=}}"{{#if:{{{system|}}}|9%|7%}}"{{!}} [[centimetre-gram-second system of units|CGS]] {{!}}{{!}}width{{=}}"{{#if:{{{system|}}}|9%|7%}}"{{!}} [[metre-tonne-second system of units|MTS]] {{!}}{{!}}width{{=}}"{{#if:{{{system|}}}|9%|7%}}"{{!}} [[International System of Units|SI]]}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=ft/s{{sup|2}}}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"gal, centimeter per second squared"{{!}} [[gal (unit)|{{#if:{{{symbols|}}}|Gal|Gal}}]] {{!}}{{!}} m/s{{sup|2}} {{!}}{{!}} m/s{{sup|2}}}}
 |-
-! Acceleration (''a'')
+!scope="row"| [[Mass]] (''m'')
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=ft/s<sup>2</sup>}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=m/s<sup>2</sup>}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"slug"{{!}} [[slug (unit)|slug]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"hyl, also called “metric slug” or “TME”"{{!}} [[hyl (unit)|hyl]]}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=ft/s<sup>2</sup>}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=m/s<sup>2</sup>}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound-mass (lbm)"{{!}} {{#if:{{{symbols|}}}|{{lbm}}|pound-mass}}}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"kilogram, sometimes kilogram-mass (kgm)"{{!}} {{#if:{{{symbols|}}}|kg|kilogram}}}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=ft/s<sup>2</sup>}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"gal, cm/s²"{{!}} [[gal (unit)|Gal]] {{!}}{{!}} m/s<sup>2</sup> {{!}}{{!}} m/s<sup>2</sup>}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound (mass)"{{!}}  [[pound (mass)|{{#if:{{{symbols|}}}|lb|pound}}]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"gram"{{!}} [[gram|{{#if:{{{symbols|}}}|g|gram}}]] {{!}}{{!}}title="ton(ne)"{{!}} [[tonne|{{#if:{{{symbols|}}}|t|tonne}}]] {{!}}{{!}}title="kilogram"{{!}} [[kilogram|{{#if:{{{symbols|}}}|kg|kilogram}}]]}}
 |-
+!scope="row"| [[Force]] (''F''),<br> [[weight]] (''W'')
-! Mass (''m'')
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"slug"{{!}} [[slug (mass)|slug]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"hyl, also called “metric slug” or “TME”"{{!}} [[hyl (unit)|hyl]]}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound (force)"{{!}} [[pound (force)|{{#if:{{{symbols|}}}|lb|pound}}]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"kilopond, also called “kilogram-force” (kgf) in English"{{!}} [[kilopond|{{#if:{{{symbols|}}}|kp|kilopond}}]]}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound-mass"{{!}} [[pound-mass|lb<sub>''m''</sub>]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"kilogram"{{!}} [[kilogram|kg]]}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound-force (lbf)"{{!}} {{#if:{{{symbols|}}}|{{lbf}}|pound-force}}}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"kilopond (kp), sometimes kilogram-force (kgf)"{{!}} {{#if:{{{symbols|}}}|kp|kilopond}}}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound (mass)"{{!}} lb}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"gram"{{!}} g {{!}}{{!}}title="ton(ne)"{{!}} t {{!}}{{!}}title="kilogram"{{!}} kg}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"poundal"{{!}}  [[poundal|{{#if:{{{symbols|}}}|pdl|poundal}}]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"dyne"{{!}}  [[dyne|{{#if:{{{symbols|}}}|dyn|dyne}}]] {{!}}{{!}}title{{=}}"sthène"{{!}}  [[sthène|{{#if:{{{symbols|}}}|sn|sthène}}]] {{!}}{{!}}title{{=}}"newton"{{!}}  [[newton (unit)|{{#if:{{{symbols|}}}|N|newton}}]]}}
 |-
-! Force (''F'')
+!scope="row"| [[Pressure]] (''p'')
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound (force)"{{!}} lb}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"kilopond, also called “kilogram-force” (kgf) in English-speaking areas"{{!}} kp<!--kg-->}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound per square inch (psi)"{{!}} [[pound per square inch|{{#if:{{{symbols|}}}|lb/in{{sup|2}}|pound per square inch}}]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"technical atmosphere"{{!}} [[technical atmosphere|{{#if:{{{symbols|}}}|at|technical atmosphere}}]]}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound-force"{{!}} [[pound-force|lb<sub>''F''</sub>]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"kilopond, also called “kilogram-force” (kgf) in English-speaking areas"{{!}}  [[kilopond|kp]]}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound-force per square inch"{{!}}  [[pound per square inch|{{#if:{{{symbols|}}}|psi|pound-force per square inch}}]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"standard atmosphere"{{!}} [[Standard atmosphere (unit)|{{#if:{{{symbols|}}}|atm|standard atmosphere}}]]}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"poundal"{{!}}  [[poundal|pdl]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"dyne"{{!}}  [[dyne|dyn]] {{!}}{{!}}title{{=}}"sthene"{{!}}  [[sthène|sn]] {{!}}{{!}}title{{=}}"newton"{{!}}  [[newton (unit)|N]]}}
+| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"poundal per square foot"{{!}} {{#if:{{{symbols|}}}|pdl/ft{{sup|2}}|poundal per square foot}}}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"barye"{{!}} [[barye|{{#if:{{{symbols|}}}|Ba|barye}}]] {{!}}{{!}}title{{=}}"pieze"{{!}} [[pieze|{{#if:{{{symbols|}}}|pz|pieze}}]] {{!}}{{!}}title{{=}}"pascal"{{!}} [[pascal (unit)|{{#if:{{{symbols|}}}|Pa|pascal}}]]}}
-|-
-! Pressure (''p'')
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound per square inch (PSI)"{{!}} [[pounds per square inch|lb/in<sup>2</sup>]]}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"technical atmosphere"{{!}} [[technical atmosphere|at]]}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"pound-force per square inch"{{!}} <!--lb<sub>''F''</sub>/in<sup>2</sup>--> PSI}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"standard atmosphere"{{!}} [[atmosphere (unit)|atm]]}}
-| {{#switch:{{{system|}}}|English|Imperial|US|FPS|=title{{=}}"poundal per square foot"{{!}} pdl/ft<sup>2</sup>}} {{#if:{{{system|}}}||{{!}}{{!}}}} {{#switch:{{{system|}}}|international|metric|SI|=title{{=}}"barye"{{!}} [[barye|Ba]] {{!}}{{!}}title{{=}}"pieze"{{!}} [[pieze|pz]] {{!}}{{!}}title{{=}}"pascal"{{!}} [[pascal (unit)|Pa]]}}
 |}<noinclude>
-== Parameter ''system'' ==
-{{GravEngAbs|system=metric}}
-{{GravEngAbs|system=English}}
 {{reflist}}
+{{documentation}}
 </noinclude>