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This notice seeks information from sources who are capable of obatining four (4) metrology-grade, precision temperature-controlled air baths for standard resistors. These air baths will be used to fil... This notice seeks information from sources who are capable of obatining four (4) metrology-grade, precision temperature-controlled air baths for standard resistors. These air baths will be used to fill a gap in resistance measurement infrastructure for resistance calibration services, the digital impedance-bridge project and the kibble balance. See attached notice for details.