The Rolex 1225 is a relatively obscure, yet fascinating, movement within the brand's extensive horological history. While not as widely discussed as its more prolific cousins like the 3135 or the Calibre 2824-2, the 1225 holds a unique position, showcasing Rolex's commitment to precision and innovation, even within lesser-known calibers. This article delves deep into the intricacies of the Rolex 1225, exploring its specifications, comparing it to other movements like the Rolex 6694, and examining the reasons behind its relatively limited presence in the broader Rolex catalog. The term "alter" in the title refers to variations and potential modifications encountered within this caliber, highlighting the subtle differences that can exist even within the same movement family.
Rolex 1225 Caliber: A Closer Look
The Rolex 1225 is a manually wound caliber, a testament to Rolex's dedication to crafting both automatic and manual movements, catering to a diverse range of watch enthusiasts. Its construction reflects the high standards of quality and precision synonymous with the brand. Key features that define the 1225 include:
* Kif-Duofix Escapement: The incorporation of the Kif-Duofix shock absorption system is a hallmark of Rolex movements. This system effectively protects the delicate escapement wheel from the damaging effects of impacts and shocks, ensuring the watch's continued accuracy and reliability under various conditions. The Duofix system, in particular, offers enhanced protection compared to earlier shock protection mechanisms.
* Adjustment Weights on Balance Spokes: The placement of adjustment weights directly on the balance spokes provides a precise means of regulating the watch's rate. This allows for fine-tuning of the timekeeping performance, a critical aspect of achieving high accuracy in a mechanical movement. This direct adjustment mechanism contributes to the overall precision and adjustability of the 1225 caliber.
* Fine Adjustment with a Normal Screwdriver: The inclusion of a system for fine adjustment using a standard screwdriver simplifies the process of regulating the movement. This feature is both practical and indicative of Rolex's attention to detail, making maintenance and adjustments more accessible to skilled watchmakers. It’s a testament to the design philosophy focusing on practicality alongside precision.
* Manual Winding: Unlike the more common automatic movements, the 1225 is manually wound. This necessitates regular winding, typically once a day, but offers a tactile connection to the mechanics of the watch, appealing to those who appreciate the ritualistic aspect of manual winding. The manual winding also contributes to the simplicity and robustness of the movement.
Rolex 1225 Specs: Decoding the Technical Details
While precise specifications for the Rolex 1225 are not readily available in official documentation, piecing together information from various sources, we can build a reasonable picture of its technical attributes. We can infer certain aspects based on its time period and similar Rolex movements. These inferred specifications include:
* Jewels: The number of jewels is likely to be in the range of 17-21, typical for a high-quality manually wound movement of this era. The precise number would depend on specific iterations of the 1225.
* Frequency: The balance wheel likely oscillates at a frequency of 18,000 vibrations per hour (vph) or 2.5 Hz, a standard frequency for many mechanical movements.
* Power Reserve: The power reserve would probably be around 40-48 hours, a typical range for a manually wound movement of this complexity.
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