Tokunaga ,seiko divers

[time_ keeper]

(Κάντε κλικ εδώ να εμφανιστεί η φωτογραφία.)

το τουνα ειναι πιστοποιημένο καταδυτικό?

[PanosI]

το τουνα ειναι πιστοποιημένο καταδυτικό?

Τι είναι πιστοποιημένο καταδυτικό;

[time_ keeper]

το τουνα ειναι πιστοποιημένο καταδυτικό?

Τι είναι πιστοποιημένο καταδυτικό;

εννοω αν εχει περασει καποια τεστ απο την εταιρεια εκτος των συνηθισμενων..

[george_]

το τουνα ειναι πιστοποιημένο καταδυτικό?

Τι είναι πιστοποιημένο καταδυτικό;

εννοω αν εχει περασει καποια τεστ απο την εταιρεια εκτος των συνηθισμενων..

Tokunaga on: The materials of Seiko 1000m diver's watch


The material of the protect cover (outer case body) of Seiko 1000m diver's watch is not coating of ceramics but the solid material of ceramics.

In addition, the expression with "base metal" in the marking of a case is used when the parts which carried out the golden color mean that it is not "gold", and the materials of the base metal are such as brass, nickel silver, stainless steel, pure titanium and titanium alloy etc.

These materials are non-magnetic materials. The duty of anti-magnetic property was not achieved by those parts, but the anti-magnetic plate (please refer to the cross section drawing below) made of pure iron on the inner case body has achieved the duty of anti-magnetic property.

I summarized the materials and surface treatment of those parts on the following image. Please refer to in detail.


(Κάντε κλικ εδώ να εμφανιστεί η φωτογραφία.)

(Κάντε κλικ εδώ να εμφανιστεί η φωτογραφία.)

[george_]

seiko

[PanosI]

το τουνα ειναι πιστοποιημένο καταδυτικό?

Τι είναι πιστοποιημένο καταδυτικό;

εννοω αν εχει περασει καποια τεστ απο την εταιρεια εκτος των συνηθισμενων..

For saturation diving τα δίνει η Seiko. Περισσότερα δεν ξέρω.

[george_]

Historical stuff about 6306/6309 150m diver's watches (scan)




Dear Randall-san:

I designed these models from 1975, as the next model of 6159 600m professional diver's watch. So if I am allowed to judge this history from my memory and my saved stuff, it will be as follows.

Both of the 6306 diver's watches for domestic and the 6309 diver's watches for overseas were made in Suwa Seikosha from 1976, and 6306 diver's watches were put on the production "slightly first". Those basic specifications were same except for the number of jewels and the bilingual language display of the calendar.

The reason why I said the "slightly first" is only that I was not able to confirm the start month on the production. I am sure the 6306 diver's watches came first, too.

If speaking from the viewpoint of plans or of technical designing on 6306/6309 diver's series, I am sure the concept of influence or of derivation between those watches did not exist in 1976. It is because I issued the specification drawing of those diver's watches as the same one. This means that I wrote only a description such as "6306 ( Japan ) / 6309 ( Overseas )" on one sheet of common paper in order to show the difference. The drawing below is the original specification drawing of 6306/6309 150m diver's watch (which has been editted).

Incidentally, as for those calibers, the 6309 caliber was designed first. The base caliber of 63 series (about ten) is 6309.


I hope this helps you.

Sincerely yours,

Ikuo Tokunaga


http://seiko-divers.info/scwf/index.php?mod=103&action=1&id=1044407765

[george_]

το τουνα ειναι πιστοποιημένο καταδυτικό?

Τι είναι πιστοποιημένο καταδυτικό;

εννοω αν εχει περασει καποια τεστ απο την εταιρεια εκτος των συνηθισμενων..

For saturation diving τα δίνει η Seiko. Περισσότερα δεν ξέρω.

Tokunaga!εγγυηση!

[time_ keeper]

τζορτζ αυτο που ποσταρες ειναι το 1000αρι.

πανο οκ, αυτο σημαίνει οτι καποιους ελεγχους παραπανω εχουν κανει.

[george_]

τζορτζ αυτο που ποσταρες ειναι το 1000αρι.

πανο οκ, αυτο σημαίνει οτι καποιους ελεγχους παραπανω εχουν κανει.

Η seiko εχει παραδοση και τεχνολογια στο καταδυτικο ρολοι,αυτο θα βρεις μεσα απο αυτα που ποσταρα,σημειο αναφορας στην εξελιξη των καταδυτικων ρολογιων της ,ο Tokunaga

[george_]

Αποστολη ,να λες τουλαχιστον 3 φορες την ημερα Tokunaga!!!

[george_]

[george_]

Ikuo Tokunaga

[time_ keeper]

Αποστολη ,να λες τουλαχιστον 3 φορες την ημερα Tokunaga!!!

ποιος ειναι ο κύριος τακουναγκα?

[george_]

Αποστολη ,να λες τουλαχιστον 3 φορες την ημερα Tokunaga!!!

ποιος ειναι ο κύριος τακουναγκα?

Dear Sir and Madam,

My name is Ikuo Tokunaga. I am an engineer of SEIKO and I have developed a lot of special watches such as deep-sea diver's watches, pilot watches, adventure watches, railway watches and so on over a span of thirty years.


At the same time, I have been a member of the technical group and ISO working group of the Japan Clock & Watch Association for a long time, and now I am the chairman of the ISO(International Organization for Standardization ) working group.


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