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"Elginium" and "Beryl-X" Are Latest Elgin Contributions to Watchmaking Progress

From The American Horologist magazine, September 1938

"Elginium" and "Beryl-X" Are Latest Elgin Contributions to Watchmaking Progress 

All the new Elgin 15/0 watches now on exhibit are equipped with the new self-compensating "Elginium" hairsprings and "Beryl-X" solid balances.

Elginium is a special alloy-protected by registered trade marks.  It is ideally suited for use with Elgin's unique selfcompensating Beryl-X balance.

The Beryl-X solid balance is made from a heat-treatable alloy, which combines the characteristics of distortionresistance, stiffness, and wear-resistance that are required of an exceptional balance.

Elgin test have shown that where an Elginium hairspring and Beryl-X balance are used together, either part may be replaced without altering the temperature adjustment of the watch, because neither Elginium nor Beryl-X are appreciably affected by temperature variation.  Other tests have proved that magnetism has little or no effect on Elginium and Beryl-X, separately or in combination.   And neither alloy will rust.

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