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Guidelines for Examination

 
 
2.
Units which are defined on the basis of SI units but are not decimal multiples or submultiples thereof 

Quantity

Unit

 

 

 

Name

Symbol

Value

Plane angle

revolution(a)

 

1 revolution = 2 p rad

 

grade or gon

gon

1 gon = p / 200 rad

 

degree

°

1° = p / 180 rad

 

minute of angle

'

1' = p / 10 800 rad

 

second of angle

"

1" = p / 648 000 rad

Time

minute

min

1 min = 60 s

 

hour

h

1 h = 3 600 s

 

day

d

1 d = 86 400 s

(a)
No international symbol exists 
The prefixes listed in F-II, Annex 2, 1.3 may only be used in conjunction with the names 'grade' or 'gon' and the symbols only with the symbol 'gon'.