Foxy Green Foxbody Build

89 Fox 427 said:
@Steve439 I don't know how to read this mm piece of shit I've been staring at it trying to understand how the big wheel only goes to 50 like I have to do math for the other 50 I'm so confused
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It works just like an inch micrometer.
As you spin, each full rotation is .5 mm.
Each of the increment lines on the barrel are .01 mm, so the 50 of them around adds up to .5 mm.

The vernier lines are .001 mm.
So you look at the vernier, see which number lines up (3 in that case), and add that number times .001 mm to the total from the scale and the barrel.

So the barrel is past the 6mm line on the scale, plus .21 mm (21 x .01), and .003 mm from the vernier.

Then divide by 25.4 and you have your inch number.
Easy-peasy and about 25% more precise than an inch micrometer (about 50 TPI compared to 40 TPI).
 
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89 Fox 427 said:
So this is supposed to mean it's 0.995mm? I think I'm lost that can't be right. What the actual fuck? I thought metric system was easier

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It's difficult to tell by the angle, but it looks to be just shy of the 45 line.

So .5 mm from the scale, .44 mm from the barrel, and probably about .009 from the vernier.

.949 is my guess.

That one is easy to double check, it's a little more than .05 mm away from 1 mm.
 
Yoyodyne said:
Those lines on the barrel are vernier lines, the 3 is the first one that lines up with any other line, so you add 3 tenths to the primary measurement.


That's .994 plus a few tenths, look further up on the barrel and see which vernier line matches up with a line on the thimble, that will tell you how many more tenths to add to the .994. Yes it's complicated and not intuitive. I'm gonna guess it's about .008.
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This makes more sense and is absolutely retarded at the same time. If I was an aussie machinist I'd slit my ankles so I bleed out even slower
 
I actually created a thread back on YB about how much the metric system sucks.

But then I bought a 3D printer...

:dcat:
 
1mm = .03937

22.225mm = .87499

Unless you’re working in 98.6* shop, the longer you hold something the bigger it gets.
 
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^ I use one of them for 0-1" 'cause my eyes ain't what they used to be.

I have to switch to a pair of 2.5 readers to see the vernier lines matchup.
 
Well it seems no one has a no-go gage in .8752" and it's at least 3 weeks before I can get one.

The no go gage is .87516" to .87520" so I figure that's an appropriate check to see if minimum .0012" clearance is there
 
The "no" and "Nogo" terms are so mixed up by people I prefer "minus" and "plus"...

Anyway, a ".875 plus" should also come in at .8752
 
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