Anyone have one of these knobs?

[BuGG]

Anyone have one of these knobs, or a pedal that uses them?  I'm just curious about the size (maybe up against a 1510 or MXR?)... 

I've contacted Daier for a datasheet/drawing but they apparently can't provide one for this one.   

It looks like some sort of Davies clone but I can't figure out which one.

[somnif]

Well I found the technical drawing, if you can read mandarin anyway....

http://p.globalsources.com/IMAGES/PDT/SPEC/824/K1147914824.pdf

[BuGG]

Heeey, that's much more info than I had so thanks!   

I reckon the diameter is around ~22mm not counting the pointer.

[alanp]

Whatever it is, it looks pretty cool!

[HamSandwich]

Me likely. Where are you buying them from?

[chromesphere]

Interesting shape.  Daier knobs are not the best quality though, ill just throw that warning out there.