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Feras · 9 February 2012, 03:30 PM

Quote:

Originally Posted by The GMT Master

Hi Grady,

The standard Nivarox hairspring and the Parachrom hairspring are essentially interchangeable, so a Parachrom hairspring could be technically found in any Rolex movement with a free sprung balance. The 3131 and 3132 are of a different construction to the 3130 as well as having the Parachrom, hence their different designations

Hope this helps!

Chris

The 3132 is unitque

michigander · 9 February 2012, 04:20 PM

Any info on the 3175?

Andad · 9 February 2012, 06:43 PM

Excellent information on the 3185 - 3186 movements Christophe.
I will save your pictures with a credit to you if that is ok.
Many have said that the differences were so insignificant that a watchmaker could not tell the difference.
Seems that some have been wrong for a while now.

TTmax · 9 February 2012, 06:55 PM

Quote:

Originally Posted by directioneng

Excellent information on the 3185 - 3186 movements Christophe.
I will save your pictures with a credit to you if that is ok.
Many have said that the differences were so insignificant that a watchmaker could not tell the difference.
Seem that some have been wrong for a while now.

You're welcome Eddie

. This an extract from R1 catalog, not my creation unfortunately.

The GMT Master · 9 February 2012, 09:14 PM

Quote:

Originally Posted by michigander

Any info on the 3175?

There's no such movement as a 3175, Terry

TTmax · 9 February 2012, 10:01 PM

.
Yes there is a 3175 , it was used for GMT 16700 :

The GMT Master · 9 February 2012, 11:07 PM

Quote:

Originally Posted by TTmax

.
Yes there is a 3175 , it was used for GMT 16700 :

I stand corrected

cedargrove · 10 February 2012, 01:24 AM

Cristophe,

Do you have any details on the 3131 (Milgauss)? Specifically I am interested in how it differs from the 3130. Is it just the parachrom hairspring and the faraday cage, or is there more to it. Thanks in advance for anything you may have.

Rich

subtona · 16 May 2017, 02:10 PM

Bump of this informative thread.

9 February 2012, 06:43 PM	#33
Andad 2024 SubLV41 Pledge Member Join Date: Nov 2006 Real Name: Eddie Location: Australia Watch: A few. Posts: 37,526	Excellent information on the 3185 - 3186 movements Christophe. I will save your pictures with a credit to you if that is ok. Many have said that the differences were so insignificant that a watchmaker could not tell the difference. Seems that some have been wrong for a while now. __________________ E

16 May 2017, 02:10 PM	#39
subtona "TRF" Member Join Date: Jan 2011 Real Name: gus Location: East Coast Watch: APK & sometimes Y Posts: 26,598	Bump of this informative thread. __________________

9 February 2012, 04:20 PM	#32
michigander Member Join Date: Jan 2012 Real Name: Terry Location: Detroit/Socal Watch: GMT-Master 16700 Posts: 173	Any info on the 3175?

9 February 2012, 10:01 PM	#36
TTmax Banned Join Date: Mar 2011 Real Name: Christophe Location: France Watch: DJ/Gmt2/IIc/E2/ToG Posts: 434	. Yes there is a 3175 , it was used for GMT 16700 :

10 February 2012, 01:24 AM	#38
cedargrove "TRF" Member Join Date: Dec 2010 Real Name: Rich Location: Canada Watch: Milgauss, GMT IIc Posts: 3,013	Cristophe, Do you have any details on the 3131 (Milgauss)? Specifically I am interested in how it differs from the 3130. Is it just the parachrom hairspring and the faraday cage, or is there more to it. Thanks in advance for anything you may have. Rich

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