Originally Posted By: ireckon
I know this is a thread about flat whistles, but I don't want to start a new thread just to talk about the Acme 560:

http://www.acmewhistles.co.uk/xcart/product.php?productid=64

Does anybody have thoughts? I just ordered one. It's only slightly bigger than the Acme 660, and reviews say it's louder with a deeper tone. The Acme 660 is already incredibly loud.



I don't think you could go wrong with the 560 as a general purpose whistle. From what I've seen it's just a wider variant of the 660.
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