I have the tool pictured in the first post, but think I bought it long enough ago that it was about half that price. Formulajones brought up a good point that most parting lines are not centered so most measurements will be off. Also, the rough backing on the current pinion gears will give readings varying by .004" to .006" depending on the spot you measure. I can't remember the manufacturer that does create a little flat area that is accurate but most don't touch the face. so even very good measuring tools are just going to put the measurement in the ball park and it's going to be trial and error from there.
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Mick Batson
1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress.
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