In Chukk's photo I think it's a little out of adjustment. The bit of cable shown on the left is a little too long and the right is a little short. It should be ccw about 1/8 turn, so as the brake engages, it rotates cw until the right cable is coming about straight out of the housing when the brake is fully engaged
I got some of these once for a project I don't remember now and I put one of them in the Box o' Crap with its parts and lost the other one. Which means I have it... somewhere.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."