The image is from the Wikipedia article "VU Meter" - I feel that this style of font, with the very low cross on the A and the distinctive K, is often seen on older technical equipment like this but I can't seem to identify anything exactly like it. If anyone has any ideas that would be great!

http://en.wikipedia.org/wiki/VU_meter

Thanks.

EDIT: Thanks a lot guys; I think idiotcountry got the closest here, cheers!