Seller: horo-parts (6,182) 99.9% , Location: Lisbon, Ships to: Worldwide, Item: 260999740132 Condition: New, Age: Antique, Post-1900, Type: Clock Parts, Sub-Type: Suspension Spring, Suspension Wire, Clock Type: 400 Day, Anniversary, Jahresuhr, Mantel, Desk, Brand: HOROLOVAR, Details: Horolovar® Temperature Compensating Springs are made from Ni-Span-C® and are available in 23 different strengths. Pack contains three Springs .0040”(.102mm) thick, each 5-3/8"(136.5mm) long, for Gustav Becker * 400-Day / Anniversary clocks: (*also GB and BHA) * * * When a 400-Day Clock is equipped with a Horolovar® suspension spring, temperature variation will not change the rate of the pendulum cycle. So once regulated, the clock will keep excellent time. Horolovar® springs have very tensile strength, high fatigue strength and freedom from brittleness. Therefore they will not brake easily as do bronze or steel springs. * * * As a collector of 400-Day Clocks I know them well, so should you need assistance regarding the selection of the correct spring for your clock, please do not hesitate to ask, I will be most pleased to help. * * * I ship worldwide and usually dispatch the very same day of receiving payment, aiming for the highest possible turnaround and service level. * * * Thank You!