Annex 2 – Units recognised in international practice as determined by the President under Rule 49(2) (see F‑II, 4.13)
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 π rad |
|
grade or gon |
gon |
1 gon = π / 200 rad |
|
degree |
° |
1° = π / 180 rad |
|
minute of angle |
' |
1' = π / 10 800 rad |
|
second of angle |
" |
1" = π / 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".