@article{ref1,
title="On steam pressure gauges",
journal="Proceedings of the institution of mechanical engineers",
year="1871",
author="Spon, Ernest",
volume="22",
number="1",
pages="281-292",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1871_022_024_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1871_022_024_02"
}