Vernier

[Onoff]

It's not aerospace work, I assume...

Well most stuff I do tends to be RAF...

...rough as

I want the clips to go on and off reasonably easily. Had grief at work too many times where the "turner" has barely kissed the shaft with the tool and the then stressed circlip breaks off.

 

[Munkul]

Well most stuff I do tends to be RAF...

...rough as

I want the clips to go on and off reasonably easily. Had grief at work too many times where the "turner" has barely kissed the shaft with the tool and the then stressed circlip breaks off.

haha I know RAF work

What I mean is its a large tolerance for error to start with, so if you work off your lathe's micrometer dials you won't need to measure it at all. It'll be close enough, to the nearest thou or two.

 

[Onoff]

haha I know RAF work

What I mean is its a large tolerance for error to start with, so if you work off your lathe's micrometer dials you won't need to measure it at all. It'll be close enough, to the nearest thou or two.

Gotcha, 40 thou to the inch, account for the backlash, bendy tool etc!

 

[Munkul]

40 thou to the inch

I know you meant mm

Your tool won't bend enough to matter in this case, and backlash is taken out when you touch on... even if you're 3 or 4 thou off, that's only 0.1mm and in this case it's just not critical.

 

[Stupoty]

Have you got a caliper with the annoying depth stick on the end ?

Stu

 

[Pete.]

Either touch off and dial in your depth or get a piece of scrap in the chuck, turn a groove with the same tool but in the end of the scrap so it turns a step instead of a groove. Measure with your calipers and when you hit your diameter zero the dial.

 

[RichardM]

Two bits of thin steel you know the depth of, placed in the groove, measure the diameter plus the depth of the two pieces of steel and take the depth of the two pieces of steel off the result to find diameter.

 

[Paul.]

Two bits of thin steel you know the depth of, placed in the groove, measure the diameter plus the depth of the two pieces of steel and take the depth of the two pieces of steel off the result to find diameter.

Thats how I'd do it too, a couple of washers will do it

 

[SierraV6]

Two bits of thin steel you know the depth of, placed in the groove, measure the diameter plus the depth of the two pieces of steel and take the depth of the two pieces of steel off the result to find diameter.

Simple but clever, very good!

 

[Bobupndown]

You have one Vernier caliper and one digital.


Thought I'd say it before some other hero says it

Glad they invented digital versions, I struggle to read the manual verniers these days.