I thought lining up the mark was good for a rough estimate for stretch though? I guess there isn't much excuse when a dial indicator is only about 15 bucks from harbor freight, but still... Nothing exact, but a good ballpark?

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth