assembled
buy one of these too: http://shpws.me/2CyN
You'll need to line the two parts up, and assemble them with pliers to press the circle into place. it's simple if you line it up right.
cm:
1.786 w x
1.788 d x
0.256 h
in:
0.703 w x
0.704 d x
0.101 h
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