Steel rulers and angles?

[Hammers]

I have lost my beloved 30cm thin, narrow steel ruler and I am looking for a replacement but I find them hard to get hold of.

I have very specific requirements, it should measure 300 mm, be no wider than 15 mm, have etched mm grades and should be made of flat spring steel.

I have also lost my smallish right angle of flat spring steel. Where can I find a replacement?

[Mitch K]

try
http://www.axminster.co.uk/hand-tools/measuring-marking/rules-scales-straight-edges/ or any good engineering supply house?

[Connectamabob]

I use one of these:
http://www.generaltools.com/1241--12-300mm-Flexible-Marking-Rule_p_558.html
Unfortunately the images on that page are borked, but here's the 6" version on amazon:
http://www.amazon.com/General-641-6-Ultra-Rule/dp/B0009K74HS
The 12" one looks the same, just longer. It is 305mm x 22mm, which is too wide, I realize, but it's quite good.

Unfortunately since I live in the US, everything defaults to the chrome-plated idiocy that is the "standard" measurement system. I have a set of machinist's calipers I inherited from my grandfather that are extremely well made but unfortunately only measure in decimal inches. God I hate decimal inches. It's like some half-bothered, brain-damaged hybrid of metric and standard that only exists because some engineer way back when was culturally brow-beaten into using standard when he wanted to use metric (I have no idea how they were actually invented, and don't care, but that's how it comes off).