GL F IIA2.2 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".

Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/f_iia2_2.htm

Date retrieved: 17 May 2021

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EPO Guidelines - F The European Patent Application