TY - RPRT TI - Specifications and tolerances for reference standards and field standard weights and measures: specifications and tolerances for field standard weight carts - 2019 edition AU - Miller, Val R PY - 2019 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST HB 105-8-2019 DO - 10.6028/NIST.HB.105-8-2019 ER -