Delta Ds2400-21 Antenna problem

[christos]

hello..i found this antenna
http://s27.postimg.org/r89y1j70z/asasasasasas.jpg
and i found the diagram for it and i was wondering how big this is,
so i made a copy of it and was really big.
 
http://s30.postimg.org/xa3qzezgx/IMAG2165.jpg
it uses 4 X A4 paper

is it normal??
its for 2.4 ghz wifi

some of the dimensions don't match up for 2-4 mm


here is the file in pdf

http://125.160.17.21/speedyorari/view.php?file=orari-diklat/teknik/2.4ghz/antenna/2.4ghz-patch-21dBi/DS+2400+-+21.pdf