I need a micrometer to measure camshaft lobe height, journal diameter, and the thickness of valve clearance discs. Would this set give accurate enough measurements? http://www.harborfreight.com/3-piece-micrometer-set-66512.html?utm_medium=cse&utm_source=nextag&hft_adv=40011&mr:referralID=5a9c804a-…

If you have access to a good machine shop, they should have a set of Jo blocks or other standards that they use to check their measuring tools. Another possibility is an instrument calibration or metrology service in your area who should have the capability to check measuring equipment. Even very …

The micrometers you show have measurements down to 0.001", and I’m sure the accuracy is plus/minus a few thousandths. If that won’t cut it, look elsewhere. No tool will have an accuracy equal to the lower limit of it’s measurement capability. I’d guess +/- 3 to 5 thousandths, but it could be as l…

This one has great reviews… If anyone sees a reason why I shouldn’t buy it, please let me know. [image] Amazon.com: Carrera Precision CP9806-TF Titanium 0-Inch to 6-Inch Electronic Fractional & Decimal Digital Caliper: Home Improvement Features »Extra Large easy to read digital LCD scre…

As long as accuracy of +/- 0.001" and resolution of 0.0005" are all you need, it should work.

A jig would be required to measure cam lobe height. And for the DIYer the Harbor Freight 3 piece gauge set might be accurate enough. When setting valve clearance using shims it’s usually a matter of assembling the valve train without shims and measuring the clearance with a feeler gauge and installi…

“A jig would be required to measure cam lobe height.” Really? Could a jig be attached to the caliper posted above? "Does a shop manual indicate measuring cam height?’’ Yes, Haynes. I’ll be removing the camshafts to replace stem seals and figured it would be a good time to check the camshafts ''…

Dear mystic, It is useless to ask people here if the measuring instruments that you suggest are accurate. Even if someone owned one identical to what you post, yours may be different; it is not the same tool. Nobody can sit in a chair at a keyboard and predict that a low cost measuring instrument…

Wha Who? I understand what you’re saying and I do plan on checking whatever tool I end up with to make sure it’s measuring properly before using it.

Wha Who? is wrong, it’s easy to buy an accurate gauge from a reputable maker. Mystic, what do you plan to do with it? Are you machining things, or are you wanting to check dimensions?

Micrometer Selection

Maintenance/Repairs

Caddyman February 12, 2012, 6:34am 14

That $25 caliper should do just fine…

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Micrometer Selection

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