mainspring

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  • Hole End Clock Mainspring Hole End Clock Mainspring
    What is being measured below is the sizes of the new mainspring to match up to the old one. The width is measured first and matched up to the width below, then the thickness is measured with a micrometer, then the app ...
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    HEMSP: $9.89$39.89
  • Loop End Clock Mainspring Loop End Clock Mainspring
    With the mainspring out of the movement, you will need a micrometer and a tape measure. First thing measured is the width, and match it up with the proper section of the chart. After matching the width, see what is the c ...
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    LESPRING: $14.89$49.89