GMT Master I - 24hr hand adjustment

[boosted83]

I am attempting to set the 24hr hand, however i'm unable to find a way to adjust it individually.

I can only seem adjust it at the same time as the hour and minute hand.

It is currently an hour out, and quite annoying. Any tips in adjusting it individually?

It's from 1975, an Oyster Perpetual, and the 24hr hand is the bottom of the stack (but it's not red, if that make any difference)

[boosted83]

It looks just like this...

[themast]

I am not sure 100% but I believe that the 1975 does not allow for independent movement of the hands.
http://www.rolexephemera.com/gmt-early-pamphlets.htm
When the bezel is aligned with 12 o'clock marker, the 24h hand and the hour hand should read the same time.

To read other time zones you should move the bezel around.

[T. Ferguson]

The 24 hour hand does not set by itself even on the new model. Nothing's wrong.

BTW, can't tell from the pic angle, but it would appear that both the hour and 24 hour hands are both set to 9:42 AM. So it doesn't look an hour off to me.

[77T]

Originally Posted by T. Ferguson

The 24 hour hand does not set by itself even on the new model. Nothing's wrong.

BTW, can't tell from the pic angle, but it would appear that both the hour and 24 hour hands are both set to 9:42 AM. So it doesn't look an hour off to me.

On the GMT Master II, the 12 hour hand can be set independently of the 24 hr. hand. Watch this to see how: http://www.youtube.com/watch?v=76RAJWQoosE

On the old GMT, the two hands are linked and 12 hr. can't be set independently. The 24 hr. hand is fixed in the mode of showing military time (day vs. night) if you place the bezel's triangle at the 12. If you want to set a 2nd TZ, spin the bezel to add/subtract the hours from local tims.

[AJMarcus]

GMTs manufactured in 1975 would make it a model 1675. Those models did not have independent 24 hour hand capability. That came about ten years later with the GMT II 16710. For the model you have you adjust the 24 bezel to set the second time zone.

[Flyjet601]

To my knowledge no GMT of any reference has an independant 24 hrs hand.
Only i believe in the 16760 was the first independant 12 hrs hand

[Tools]

That's the difference between the GMT Master, and the GMT Master II..

One has an independently adjustable hand, and the other does not..

[Watchdog]

Originally Posted by Tools

That's the difference between the GMT Master, and the GMT Master II..

One has an independently adjustable hand, and the other does not..

What he says is usually right!!!:)

[themast]

Anyway, reading the OP message, I guess the watch has some issues because he says that the GMT hand and the 12h hand are not giving the same time.

I have no idea if this is an "easy" fix. In theory it could simply be that the GMT hand was not aligned properly when installed...

[T. Ferguson]

Originally Posted by 77T

On the GMT Master II, the 12 hour hand can be set independently of the 24 hr. hand. Watch this to see how: http://www.youtube.com/watch?v=76RAJWQoosE

On the old GMT, the two hands are linked and 12 hr. can't be set independently. The 24 hr. hand is fixed in the mode of showing military time (day vs. night) if you place the bezel's triangle at the 12. If you want to set a 2nd TZ, spin the bezel to add/subtract the hours from local tims.

77T, I understand all this, I have a GMT II. The OP was asking if he could set the 24 hour by itself - not the 12 hour hand - on the old GMT 1 and I simply told him you can't set the 24 hand by itself on the newer GMT II either. Yes, I know that you can set the 12 hour hand independently on the GMT2 but I didn't mention that since he wasn't asking about that watch.

Tools is correct but just to clarify, the independently adjustable hand on the GMTII is the 12 hour hand, not the 24 hour hand. When you set the 24 hand, all three hands move on both the old and the new models.

But back to the OPs problem, the OP seems to think that his 24 hour hand has gotten out of synch. But I also told him that from what I can tell from the picture he posted there seems nothing wrong with the time showing on the 24 hour hand on his watch. Both hour hands seem to be in sycnh, reading about 9:42 AM. The 12 hour hand seems to be reading just short of 10 o'clock and the so does the 24 hour hand, just before the 10.

What does everyone else think, does it look right or does it look off? Maybe a straight ahead shot would clear it up.

[nch209]

A straight on pic should clear this up....

[themast]

Originally Posted by T. Ferguson

...from what I can tell from the picture he posted there seems nothing wrong with the time showing ...

From my understanding the OP just posted a random picture of a watch similar to his/her own. Let's wait for him/her to clarify...

[boosted83]

Thanks for the feedback so far. I've just inherited the watch and don't know the specific model number, etc. Keen to know though if anyone can enlighten me?

Yes that was just a picture that looks like it. Here's an actual... it seems to be an hour ahead of where it should be on the 24hr bezel...

[boosted83]

Anyone able to comment?

[ed2brute]

Do all the hands line up at 12:00 midnight? If they do not then you'll need to have a watchmaker pull the hands and reset them.

[Alpino]

Originally Posted by boosted83

Anyone able to comment?

You have only one option to reset the hands correctly.

You need to find a watchmaker, preferably a Rolex AD, and ask him to extract and then put them back in the right position.

[boosted83]

Originally Posted by ed2brute

Do all the hands line up at 12:00 midnight? If they do not then you'll need to have a watchmaker pull the hands and reset them.

No, the 24hr hand is at 1 o'clock on the bezel when it's actually midnight.

Okay, are they likely to say that needs to be done at the same time as a service? or can it be done on it's own?

[powerfunk]

If you inherited the watch, don't know the service history, and are having an issue like this, there's a good chance that a full service is a good idea. But I do think I once read of a similar problem on TRF and it was indeed solved quickly and easily by a watchmaker. Nice nipple dial!

[boosted83]

Can anyone help me understand a bit more about the watch? The model number? etc

[boosted83]

Is it a 'GMT 1675 two tone nipple dial'?

or is it a 16713?

[Alpino]

.

If you read Italian ...

Your watch is a 1675/3

[boosted83]

Thanks for your help.

[boosted83]

Just thought, as it has the gold bezel is it not the 1675/8?

[Tools]

Originally Posted by boosted83

Is it a 'GMT 1675 two tone nipple dial'?

or is it a 16713?

It is not a 16713, it is a 1675/3.. The actual model number is stamped on the side of the case under the bracelet. Take it off and look and the mystery will be solved..

It is an hour off.. The only fix is to have a watchmaker take the movement out, take the hour hand off and rotate it to properly align, then you are good to go..


As has been mentioned, it if has not been cleaned and oiled within the past decade, you may need to bite the bullet and spend the 6 or 700 bucks this would entail and it will come back with the hands on properly and ready to last another decade or two of trouble free operation...........

[T. Ferguson]

I'd be curious to know if anyone has an idea of how the GMT hand got out of synch in the first place.