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  • Jofra Calibration
    Jofra Calibration

    Jofra is one of the world’s leading manufacturers and developers of calibration instruments

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  • Crystal Pressure
    Crystal Engineering

    Crystal Engineering manufactures equipment that is used to measure pressure to calibrate other pressure measuring equipment and to diagnose the performance of equipment

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  • Mansfield and Green

    Mansfield & Green introduced the deadweight tester based on the floating ball principle in 1966.

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