Nomos Zeta

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Nomos Zeta (dial side)
Nomos Zeta

The Zeta (ζ) is the first automatic movement with date window from Nomos.

Like the Nomos Beta and Delta, the Zeta uses a date wheel mounted outside the movement rather than stacked between the bottom plate and the dial. This allows the movement to be just as thin as the non-date Epsilon version.

Based on the standard manual winding Nomos Alpha movement, the Zeta is part of a family of automatic movements from the manufacture.

As with all Nomos movements, this calibre is executed in three-quarter plate with hacking seconds, Glashütte Stripes and solar grinding or Long perlage.

The first self-winding movement by Nomos

Epsilon (without date) or Zeta (with date) is the first self-winding movement from Nomos. Because of the creation of this movement, Nomos can truly be called a manufacture, since it was completely designed, developed, and built in-house.

This calibre includes a large 31 mm central rotor which moves around the edge of the movement, allowing it to remain quite thin. It includes a bi-directional winding system. The balance wheel is very large, a traditional watchmaking technique to increase accuracy.

Zeta version 2

The first version of the Epsilon movement had 24 jewels. In May 2007, Nomos switched to a new version with 26 jewels. One wheel in the automatic winding system was set in two extra jewels, allowing better winding efficiency and durability thanks to reduced friction.

Manufacturer:

Nomos

Description:

Self-winding movement
Shock protection
Escapement: stone lever
Yoke winding system

Functions:

Small seconds
Date display

Data:

13½ lignes
D 31 mm, H 4.3 mm
26/24 jewels
21,600 A/h
Bi-directional winding central rotor with Wippe
Power reserve ca. 43h

Extras:

Triovis precision adjustment
Glashütte solar grinding on ratchet and crown wheel
Glashütte three-quarter plate
Glashütter Gesperr

Production period:

2006-Present