Which Concentricity Gage, 21st Century or Sinclair?

[rardoin]

I would recommend that you first borrow one from a friend to see if you need it. If you have your sizing procedure down it could be a waste of money and effort. You may find you should be looking at other possible causes

Since I fine tuned my sizing procedure my concentricity gage sits on the shelf. ....snip...

^^^^ Amen ^^^^

 

[Matt in Virginia]

Go with the cheapest one without an indicator and spend the extra money on a quality dial indicator! Interapid, Mitutoyo, Brown & Sharpe, Starrett to name a few (in order of my personal preference)

That reads as poor advice. I take it you intended to say "test indicator" where you have "dial indicator"? Granted a test indicator has a dial just like a drop dial indicator. They are FAR more versatile though...

I'd also suggest going with the "cheapest one" is also relatively poor advice when it comes to the concentricity fixture. I run Interapid test indicators(and Mitutoyo) as well, however, pairing an Interapid Test Indicator with a $15 Amazon Chicom Indicator Stands that I've seen would be outperformed by a Mitutoyo Test Indicator on a decent NOGA Stand.

Besides an Interapid Test Indicator body is too wide for some of the fixtures. Including the Accuracy One. Hence the reason I recommended the 513-402-10

Regards, Matt.

IMHO, unless you are a machinist or intend to learn/study that trade/skill set, there is NO reason to put a $250 plus indicator on a concentricity fixture. To say nothing of the hassle of having to set a 12-degree contact angle to the work surface. I'd go even further to say it is a hindrance in this application.

The Mitutoyo in this instance is just about perfect...IMHO.

 

[blisle78]

That reads as poor advice. I take it you intended to say "test indicator" where you have "dial indicator"? Granted a test indicator has a dial just like a drop dial indicator. They are FAR more versatile though...

I'd also suggest going with the "cheapest one" is also relatively poor advice when it comes to the concentricity fixture. I run Interapid test indicators(and Mitutoyo) as well, however, pairing an Interapid Test Indicator with a $15 Amazon Chicom Indicator Stands that I've seen would be outperformed by a Mitutoyo Test Indicator on a decent NOGA Stand.

Besides an Interapid Test Indicator body is too wide for some of the fixtures. Including the Accuracy One. Hence the reason I recommended the 513-402-10

Regards, Matt.

IMHO, unless you are a machinist or intend to learn/study that trade/skill set, there is NO reason to put a $250 plus indicator on a concentricity fixture. To say nothing of the hassle of having to set a 12-degree contact angle to the work surface. I'd go even further to say it is a hindrance in this application.

The Mitutoyo in this instance is just about perfect...IMHO.

Yes you are correct Matt, I meant a test indicator not a dial.

as for the “cheapest” reference that was supposed to be between the two mentioned, which both are of good quality to use a a higher end indicator rather than a cheap Chinese one provided if you pay extra. Might as well put the extra money towards a better quality measuring tool.