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HMA-113 LVDT Calibrator w/ Digital Micrometer is a precision fixture fitted with a digital micrometer to verify the performance of the linear variable differential transducer (LVDT) used in HM-271 Gilson's Concrete Coefficient of Thermal Expansion Test System. Calibration is required in AASHTO T 336 to determine linearity and repeatability of the LVDT and should be done every six months, or sooner if CTE results are not consistent. A digital micrometer allows for clear and visible reading.
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