weber IDA component identification?
 

Hi guys, I've just gotten hold of a very old weber 48mm IDA. My question is, is there any way of knowing what jets/emulsion tubes etc are in it? Nothing seems to have any numbers stamped/engraved in it, the previous owner doesn't know anything about the carb, are there some measurements or visual identifications I can use to work out exactly what's in it? Bearing in mind that I haven't got anything more accurate than a set of vernier calipers..

If not, I guess I'll just have to order a whole set of the appropriate bits to suit my car, just seems a bit wasteful :/

Thanks in advance!

edit: nevermind guys, just found the (very faint) markings. mods you can delete this if you want... I would but I can't find the delete button either! geez my eyes are rubbish, haha

lol. even with fresh stampings , my eyes dont like to make out the letters and numbers very well