micrometer adjustment.

[wheeltapper]

Hi guys, a bit of help here please.
I just got a 3-4" micrometer on fleabay for £6 + p+p.
its a german make, FEINMESSZEUGFABRIK.

it looks to be in excellent condition, see pic



however, when I test it using the 3" standard I'm half a thou out and I can't figure out how to adjust the darn thing.

the only adjustment I can see is to take up wear in the thread.
I googled adjustments and all I see is turning the barrel using the spanner in a hole in the barrel.
guess what, this hasn't got a hole.
on the inside of the barrel there s a collar with two holes,


is this an adjustment or does it just hold the whole shooting match together, I don't want to mess with it until I know what I am doing.

has anybody got any ideas.
cheers
Roy.

[75Plus]

There should be a hole in the barrel for the included spanner to fit into. The barrel can be turned independent of the spindle.

Joe

[wheeltapper]

As I have already stated in the original post " the barrel has NOT got a hole in it"

Roy

[philf]

Hi guys, a bit of help here please.
I just got a 3-4" micrometer on fleabay for £6 + p+p.
its a german make, FEINMESSZEUGFABRIK.

it looks to be in excellent condition, see pic

however, when I test it using the 3" standard I'm half a thou out and I can't figure out how to adjust the darn thing.

the only adjustment I can see is to take up wear in the thread.
I googled adjustments and all I see is turning the barrel using the spanner in a hole in the barrel.
guess what, this hasn't got a hole.
on the inside of the barrel there s a collar with two holes,

is this an adjustment or does it just hold the whole shooting match together, I don't want to mess with it until I know what I am doing.

has anybody got any ideas.
cheers
Roy.

Roy,

I've never come across a micrometer without a hole for adjustment. (I have seen them without on seperate micrometer heads.)

If it hasn't got a hole you might stand a chance of removing the thimble from the spindle (usually the thimble is on a taper and is held to the spindle by the ratchet mechanism) and putting it back on in the right place.

There might be a clue to your problem in the name of the manufacturer:

To misquote Oliver Hardy it's another "Fein Mess" 

Cheers.

Phil.

[BillTodd]

The spanner supplied is for adjusting it so...

Is there a cover over the barrel adjusting hole (does the knurlled cap unscrew?)

Bill

[wheeltapper]

HA I've sussed it

unscrewing the small knob on the end of the spindle reveals that the anvil rod( for want of a better name) is held in place with a tapered sleeve and with the taper loose the barrel with the calibrations rotates on the spindle.


the spanner is just for adjusting the wear in the thread.

I hope this helps someone else with this make of mic.

Roy

[J Harp]

I have a Starrett zero to one inch micrometer which uses the same method of adjustment adjustment.

Jim