sorry man i just clicked on the eutech link i wrote on an ealier reply and it was a place selling microphones n stuff .... i missed spelt it man
www.eutechinst.com .... wow i wonder how many times i done that .... sorry mate
that was a good link chimera .... i checked it out
...... just need to know what scale his pen uses
.... i know of three scales x500 x640 & x700 .... but i never heard of that brand ... might be more than three scales of ppm .... i checked the brands website and i still couldn't find it's scale