A1
A2
A3
A4
.
Circle
Sector
Segment
Semi-circle
30 Degree
45 Degree
60 Degree
90 Degree
450 x 625 mm
330 x 450
240 x 330 mm
165 x 240 mm
IS 11664 - 1989
IS 11664 - 1987
IS 11664 - 1986
IS 11664 ? 1981