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This is a genuine Bergeon 30548 balance truing caliper, made in Switzerland, featuring a chrome-plated brass body with guilloché finish. The jaws are equipped with ruby pivot protectors (hole Ø 0.15 mm) and a parallel opening system, designed for holding and truing the roundness and flatness of balance wheels while protecting pivots from damage.
Brand：Bergeon (Swiss)
Model：30548
Origin：Made in Switzerland
Quality：Genuine original, brand new in original packaging
Material：Brass, chrome-plated, guilloché finish
Pivot Protectors：Ruby, hole Ø 0.15 mm
Opening System：Parallel opening
Jaw Diameter：Ø 15 mm
Type：Lyre truing caliper
1. Is this truing caliper an original Bergeon genuine part?
Yes. It is manufactured by Bergeon in Switzerland, brand new in original packaging, not a third-party copy.
2. What operations is this tool suitable for?
Designed for holding and truing the roundness and flatness of balance wheels, a precision tool in mechanical movement repair.
3. What is the purpose of the ruby pivot protectors?
The ruby protectors (hole Ø 0.15 mm) securely hold the balance staff pivots, preventing bending or breakage during truing while ensuring precise positioning.
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