ETA 2892-A2 PDF

This third generation of the ETA family appeared in and remains in production today. The modification was focused on winding efficiency, with a reduced chamfer increasing the mass of the winding rotor and the switch from a stud to a jewel in the upper winding bridge for the intermediate wheel. By the s, many other movement makers offered an ultra-thin automatic movement that could compete with the ETA. The original ETA measured

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This third generation of the ETA family appeared in and remains in production today. The modification was focused on winding efficiency, with a reduced chamfer increasing the mass of the winding rotor and the switch from a stud to a jewel in the upper winding bridge for the intermediate wheel.

By the s, many other movement makers offered an ultra-thin automatic movement that could compete with the ETA. The original ETA measured The Sellita movement, distinguished by its 25 jewel count, is very popular and has replaced the ETA movement in most applications outside Swatch Group.

The Soprod A is a similarly-sized replacement but is unrelated in design. They are generally regarded as superior to the similar ETA family. The family remains one of the leading watch movements to this day. The most well-known movement in this series today is Cal. Because of its slim dimensions, Cal. Distinguishing features of the ETA family include a smaller balance wheel than historic movements, including the ETA family , and a large rotor hub located with seven visible bearings.

The balance is located at when viewed from the back with the crown at , and is located by a clockwise cock with an eccentric screw for regulation. Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.

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ETA 2892A2

History[ edit ] ETA is the result of successive consolidation of the Swiss watch industry, a combination of several former Swiss watch movement manufacturers including Valjoux , Peseux [1] [2] and Lemania. In at Grenchen , Urs Schild, a schoolmaster, and Dr. By consolidating companies that produced high-quality movements and a number of watch brands, SSIH gradually established a strong position in the Swiss watch industry. ASUAG had been founded in

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