TY - RPRT TI - Specifications and tolerances for reference standards and field standard weights and measures 5. Specifications and tolerances for field standard stopwatches AU - Andersen, Ross J PY - 1997 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST HB 105-5 DO - 10.6028/NIST.HB.105-5 ER -