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Mid Atlantic Calibration
220 E. Siddonsburg Road, Dillsburg PA 17019
(717) 766-7328
Hardness Testing Machine Service, Calibration, and Sales.
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Midwest Calibration Service LLC
381 Round Tower Drive E, Saint Charles MO 63304-0814
(636) 447-7561
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Midwest Engineering Assoc
1633 Grange Avenue, Racine WI 53405-3539
(262) 902-8038
ISO/IEC 17025 accredited calibration laboratory.