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thorm · 28 July 2021, 02:48 AM

So I saw in a thread the other day, but can't find it again, that someone claimed daytona's true diameter is 38.5mm? I was wondering whether this is true or not? If so, how is that measured? Bezel? Or case? Is it one of those when bezel ia 38.5 but case is 40? Or is it actually a true 38.5mm including case?

Secondary question, what is the true lug to lug?

vh2k · 28 July 2021, 02:56 AM

Bezel is indeed ~ 38.5mm. If you measure the case diagonally, you'll get ~ 40mm. Crystal is only ~ 30.5mm.

Driver8 · 28 July 2021, 03:03 AM

Quote:

Originally Posted by thorm

Secondary question, what is the true lug to lug?

46.5mm lug to lug

TswaneNguni · 28 July 2021, 03:06 AM

PM is larger than ss .

CoveWatch · 28 July 2021, 03:07 AM

Quote:

Originally Posted by TswaneNguni

PM is larger than ss .

is that a fact? interesting! would be interested to know the differences

thorm · 28 July 2021, 03:22 AM

Thanks!

padi56 · 28 July 2021, 03:29 AM

Well no matter the size the Daytona it must be the most over hyped watch ever with many paying crazy money for them, so to the millions of Daytona owners a mm here or there difference don't matter.

prnceofpersia23 · 28 July 2021, 03:30 AM

Quote:

Originally Posted by CoveWatch

is that a fact? interesting! would be interested to know the differences

Yes, fact. First thing you can notice visually are asymmetrical lugs on steel cases and symmetrical lugs on gold cases.

Sent from my SM-G960U using Tapatalk

TswaneNguni · 28 July 2021, 03:45 AM

Quote:

Originally Posted by CoveWatch

is that a fact? interesting! would be interested to know the differences

Been discussed here previously .If I remember correctly it was 38.5 mm vs 39.5 mm.

huncho · 28 July 2021, 05:46 AM

38.5mm for steel/yg/two tone
39.5mm for wg/rg/plat

Quote:

Originally Posted by CoveWatch

is that a fact? interesting! would be interested to know the differences

https://www.rolexforums.com/showthread.php?t=417978

Tools · 28 July 2021, 07:43 AM

If you were to measure the true diameter, instead of measuring from a machined flat used to properly locate the pushers, you would find an altogether different number.

The size of the case is from the center, out to the furthest rounded edge, then circumscribed as a circle - hence "diameter".

Measuring across at machined flats p and c gives you a false measurement of diameter.

1024px-Circumscribed_Polygon.svg.png

28 July 2021, 02:48 AM	#1
thorm "TRF" Member Join Date: Nov 2020 Location: Denmark Posts: 138	Daytona true dimensions? So I saw in a thread the other day, but can't find it again, that someone claimed daytona's true diameter is 38.5mm? I was wondering whether this is true or not? If so, how is that measured? Bezel? Or case? Is it one of those when bezel ia 38.5 but case is 40? Or is it actually a true 38.5mm including case? Secondary question, what is the true lug to lug?

28 July 2021, 03:29 AM	#7
padi56 "TRF" Life Patron Join Date: Jun 2005 Real Name: Peter Location: Llanfairpwllgwyng Watch: ing you. Posts: 52,502	Well no matter the size the Daytona it must be the most over hyped watch ever with many paying crazy money for them, so to the millions of Daytona owners a mm here or there difference don't matter. __________________ ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder

28 July 2021, 07:43 AM	#11
Tools TRF Moderator & 2024 DATE-JUST41 Patron Join Date: May 2007 Real Name: Larry Location: Mojave Desert Watch: GMT's Posts: 43,216	If you were to measure the true diameter, instead of measuring from a machined flat used to properly locate the pushers, you would find an altogether different number. The size of the case is from the center, out to the furthest rounded edge, then circumscribed as a circle - hence "diameter". Measuring across at machined flats p and c gives you a false measurement of diameter. 1024px-Circumscribed_Polygon.svg.png __________________ (Chill ... It's just a watch Forum.....) NAWCC Member

28 July 2021, 02:56 AM	#2
vh2k "TRF" Member Join Date: Jun 2020 Location: USA Posts: 3,017	Bezel is indeed ~ 38.5mm. If you measure the case diagonally, you'll get ~ 40mm. Crystal is only ~ 30.5mm.

28 July 2021, 03:06 AM	#4
TswaneNguni "TRF" Member Join Date: Feb 2008 Real Name: Chris Location: . Watch: Daytonas/Subs/GMTs Posts: 12,609	PM is larger than ss .

28 July 2021, 03:22 AM	#6
thorm "TRF" Member Join Date: Nov 2020 Location: Denmark Posts: 138	Thanks!

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