TY  - RPRT
TI  - NIST recommended practice guide : stopwatch and timer calibrations (2009 edition)/
AU  - Graham, Robert M
AU  - Gust, Jeff C
PY  - 2009
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS SP 960-12e2
DO  - 10.6028/NBS.SP.960-12e2
ER  -