Angstroms symbol in Gnuplot

I would like to have the Angstroms symbol in gnuplot. I found this website :

http://www.physics.umanitoba.ca/~gillis/gnuplot/gnuplot_postscript.html

clicking on "ps_guide.ps" and scrolling on Page 2 tells me the following:

T = text (here Times-Roman)    S = Symbol    Z = ZapfDingbats    E = ISO Latin-1 encoding

305  ¯  ⊕  ➅  Å

Now adding this like:

set xlabel "Wavelength ({/305})"

does not seem to work. How do I get it to work?

Would greatly appreciate your help!

Trillain