I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-

http://www.pvrdirect.co.uk/productin...s&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out, it clamps the reading so one
can measure something inaccessible, clamp the reading and then
withdraw the micrometer to actually see the reading.

I can't quite work out the action of the ratchet knob. It's OK
for getting correct/reasonable pressure on the measured object,
rotate with the knob on the end and just wind until it clicks.
However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

--
Chris Green

On Sun, 19 Apr 2009 10:44:16 UTC, wrote:

I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-

http://www.pvrdirect.co.uk/productin...s&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out, it clamps the reading so one
can measure something inaccessible, clamp the reading and then
withdraw the micrometer to actually see the reading.

Yes.

I can't quite work out the action of the ratchet knob. It's OK
for getting correct/reasonable pressure on the measured object,
rotate with the knob on the end and just wind until it clicks.

Pretty normal on a micrometer.

However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

Why would one need it? Just press the '0' button...

There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

Dismantle for cleaning?
--
The information contained in this post is copyright the
poster, and specifically may not be published in, or used by
http://www.diybanter.com

In message ,
writes
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-


http://www.pvrdirect.co.uk/productin...tier1=Draper+T
ools&tier2=EngineerS+Precision+Tools&tier3=Precis ion+Tools&tier4=Dial+Ga
uges&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out,
Play wirth it for another 30 seconds and you'll prolly work the rest out
as well

If you can't, buy a steel rule instead


--
geoff

wrote in message
...
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-


http://www.pvrdirect.co.uk/productin...s&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out, it clamps the reading so one
can measure something inaccessible, clamp the reading and then
withdraw the micrometer to actually see the reading.

It also allows you to use the micrometer as a go or no go gauge - set the
size you want, lock it and pass an object between the anvils.

I can't quite work out the action of the ratchet knob. It's OK
for getting correct/reasonable pressure on the measured object,
rotate with the knob on the end and just wind until it clicks.
However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

With electronic micrometers, you normally just use the zero button. That
also allows you to measure variations from a set size - zero with the anvils
shut, open to the required size or to a sample piece, zero again and measure
variations from that size.

There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

It sounds like the adjusting tool, but I don't recall when I last needed to
adjust the zero on a well looked after micrometer.

Colin Bignell

Bob Eager wrote:
On Sun, 19 Apr 2009 10:44:16 UTC, wrote:

However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

Why would one need it? Just press the '0' button...

Well yes, I realise that's the way on a digital micrometer but it does
still have 'ordinary' calibrations.


There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

Dismantle for cleaning?

Could be I suppose.

--
Chris Green

www.GymRatZ.co.uk wrote:
Bob Eager wrote:

Dismantle for cleaning?

Change the batteries?

No, there's a 'coin slot' screw for that which I'd already used to put
the battery in.

--
Chris Green

"nightjar" cpb@ insert my surname here.me.uk wrote:

wrote in message
...
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-


http://www.pvrdirect.co.uk/productin...s&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out, it clamps the reading so one
can measure something inaccessible, clamp the reading and then
withdraw the micrometer to actually see the reading.

It also allows you to use the micrometer as a go or no go gauge - set the
size you want, lock it and pass an object between the anvils.

That's a good point too, thanks.


I can't quite work out the action of the ratchet knob. It's OK
for getting correct/reasonable pressure on the measured object,
rotate with the knob on the end and just wind until it clicks.
However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

With electronic micrometers, you normally just use the zero button. That
also allows you to measure variations from a set size - zero with the anvils
shut, open to the required size or to a sample piece, zero again and measure
variations from that size.

OK, I'll just forget about the 'old fashioned' markings then.


There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

It sounds like the adjusting tool, but I don't recall when I last needed to
adjust the zero on a well looked after micrometer.

OK, as someone else said I'll probably work things out for myself by
playing with it but I thought I'd ask in case I'd missed something
really obvious.

Thanks all.

--
Chris Green

"nightjar .me.uk" cpb@insert my surname here wrote in message
...

wrote in message
...
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-


http://www.pvrdirect.co.uk/productin...s&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out, it clamps the reading so one
can measure something inaccessible, clamp the reading and then
withdraw the micrometer to actually see the reading.

It also allows you to use the micrometer as a go or no go gauge - set the
size you want, lock it and pass an object between the anvils.

I can't quite work out the action of the ratchet knob. It's OK
for getting correct/reasonable pressure on the measured object,
rotate with the knob on the end and just wind until it clicks.
However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

With electronic micrometers, you normally just use the zero button. That
also allows you to measure variations from a set size - zero with the
anvils shut, open to the required size or to a sample piece, zero again
and measure variations from that size.

There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

It sounds like the adjusting tool, but I don't recall when I last needed
to adjust the zero on a well looked after micrometer.

Colin Bignell




On my conventional M&W micrometers the hook fits in the sleeve which has the
reference line - it is used to turn this sleeve to bring the reference line
to match the zero on the barrel

"nightjar .me.uk" cpb@insert my surname here wrote in message
...

wrote in message
...
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-


http://www.pvrdirect.co.uk/productin...s&catref=52426

I'm not sure if it's supposed to have instructions with it, but it
doesn't, and the link to instructions from the above web page is broken.

The last time I used a micrometer was at school (a *very* long time
ago!). I know the basics and have made the measurements I bought it
for OK but there are a couple of things I can't work out.

What's the little lever above and left of the digital read out
for? Ah, I think I've worked it out, it clamps the reading so one
can measure something inaccessible, clamp the reading and then
withdraw the micrometer to actually see the reading.

It also allows you to use the micrometer as a go or no go gauge - set the
size you want, lock it and pass an object between the anvils.

I can't quite work out the action of the ratchet knob. It's OK
for getting correct/reasonable pressure on the measured object,
rotate with the knob on the end and just wind until it clicks.
However I think it usually does something for mechanical zeroing
as well but all I can make it do is the ratcet action and, if I
hold the main knurled ring and unscrew the end one it just
unscrews, it doesn't seem to allow mechanical zeroing.

With electronic micrometers, you normally just use the zero button. That
also allows you to measure variations from a set size - zero with the
anvils shut, open to the required size or to a sample piece, zero again
and measure variations from that size.

There is a strange little 'hooky spanner' sort of tool comes with
the micrometer. It latches into holes on the large round bit and
the small round bit (just inside the knurling). Presumably it
allows on to rotate/unscrew these but why would one want to? Is
*this* for machanical zeroing?

It sounds like the adjusting tool, but I don't recall when I last needed
to adjust the zero on a well looked after micrometer.

Colin Bignell



Described here?
http://www.mgexperience.net/archive/...rometer/688943

wrote:
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-

http://www.pvrdirect.co.uk/productin...s&catref=52426


Is it just me or does that site look uncannily like the Axminster site
at first glance.

Andrew

Andrew May wrote:
wrote:
I have just bought myself a new digital micrometer, it's this one here
from pvrdirect:-

http://www.pvrdirect.co.uk/productin...s&catref=52426


Is it just me or does that site look uncannily like the Axminster site
at first glance.

It's never struck me that way but you could be right, maybe they're using
some similar softwre.

I use PVR Direct occasionally, they are quite good on price for fairly
'minority' types of things I find.

--
Chris Green