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  1. Watchmaking & Tinkering
    1. You have an incomplete catalogue and can't seem to track down the GR code for a Lordmatic Special 5216 mainspring, however there seems to be (2) options. The measurement of the old mainspring is 0.944 x 0.124x x 360ish barrel I.D. 10.7 which of the two possibilities would work best...
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