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<DIV>David,</DIV>
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<DIV>You want the 15 gram gauge for flange centers. It is a great tool. The 100 gram gauge would be for measuring spring strength like vertical hammer or damper, but I don't own one of the 100 gram gauges so I cannot say much about its uses.</DIV>
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<DIV>Bruce Dornfeld, RPT</DIV>
<DIV><A href="mailto:bdornfeld@earthlink.net">bdornfeld@earthlink.net</A></DIV>
<DIV>847-498-0379</DIV>
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