Job Descriptions and Job Titles for:
"HAIRSPRING TRUER"
DOT:
715.381-058
Examines and adjusts hairspring assemblies to ensure horizontal and circular alignment of hairspring, using $T3truing II$T1 calipers, loupe, and watchmaker's tools: Mounts hairspring and balance wheel assembly between jaws of truing calipers. Turns wheel of caliper and examines spring to determine if center coils appear as perfect circles, using loupe. Bends inner coil of spring away from or toward collet to locate center of collet in center of spring and to correct errors resulting from faulty colleting of coil, using tweezers. Estimates space between collet and first inner coil to determine if space is within acceptable limits, and bends coil to correct errors, using tweezers. Examines plane of hairspring to determine if coils are parallel to plane of collet and raises or lowers individual coils to correct discrepancies, using tweezers.
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