My friend Andrea has a sharp eye! She sent me this photo this morning. She’s getting better at this than I am. I’m still seeing faces in my bathroom floor, in the granite wall beside the elevators, in my kitchen tools – all things I’ve taken photos of before. I haven’t been as vigilant as I ought to have been, obviously. Andrea is outdoing me!
jmn 
I bet you could do a whole series? Is it a cutter for wool strips? I’ve heard of them but never seen one.
It’s a pedal or adjustment thingie on a treadmill