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Fowler 52 646 100: Optimal Measuring Graduation Interval for Precise Accuracy Review

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Poor

Revainrating 2.5 out of 5  
Rating 
2.3
📏 Dimensional Measurement, 🔍 Test, Measure & Inspect

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Description of Fowler 52 646 100: Optimal Measuring Graduation Interval for Precise Accuracy

Accurate Measurements: This bore gage with chrome-plated handle features a dial indicator with graduation of 0.0005" and a measuring depth of 8"; carbide-tipped anvil contact points provide extended wear and improved abrasion resistance. Extended Range: This 0.7-1.5" range bore gage, with a two-point contact system, is used for measuring hole diameters and for detecting geometry abnormalities such as ovality and taper. Self-Centering: The easily adjustable bore gage is self-centering for fast and accurate measurements; features an insulated grip for extra stability. Set Includes: A dial bore gage with carbide anvils and a fitted case.

Reviews

Global ratings 3
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Type of review

Revainrating 1 out of 5

Wrong tool for the job

Was did not come in the original packaging.looks like it was opened up at some point and thrown away as it didn't have a few extensions.time was a big factor so i had no option to return it,i just had to use it as is, Other than that, dial indicators are a joke for tight tolerance measurements, I understand most engine manufacturers use them, but the reason they use them is because they're modular...not because they are are the right tool for the job, and that it's cheaper to just buy 1 gauge…

Pros
  • Extended range: This 0.7-1.5" bore gauge with 2-point contact system is used to measure hole diameter and detect geometry deviations such as ovality and taper
Cons
  • Questionable purchase for the elderly

Revainrating 5 out of 5

Cannot compare - sizing

compared to all others as this is the first and hopefully only one I will own. I've read many reviews from half a dozen or more makes/models and while this one didn't get as many high stars in imperial measurements (inches) as some others, the reasons given were either irrelevant to me or just not relevant to washing. I kept coming back to this Fowler. I chose the metric version; I can do conversions fairly easily and slowly since the United States ((promised to go metric in the 1970s) ends up…

Pros
  • Kit includes: Drill jig with carbide anvil scale and matching housing
Cons
  • So far so good

Revainrating 1 out of 5

Not suitable for precision work with modern engines

Update to original review below: Engine runs. I received and tried the tool a few days ago and am happy with it. Good reproducibility and it seems to measure correctly as a "comparator" based on some cross-checks I've done. So while this inexpensive gauge (below) is not suitable for MODERN engines, another Fowler gauge, 52-646-500, will do. Of course if you're in the 1%, buy a Mitutoyo sensor, but I guess people in the 1% don't rebuild their own engines (LOL). It would be nice if Fowler or…

Pros
  • Precise Measurements: This chrome handle bore gauge features a dial indicator with 0.0005" divisions and 8" measuring depth; Carbide tipped anvil contact points provide longer wear and increased abrasion resistance
Cons
  • Large and bulky