The Ashcroft precision
pressure gauge yields consistent, reliable accuracy
through the use of state-of-the-art precision machining
and the world's most refined bourdon tube technology.
This eliminates the need for a power source and
precludes the associated problems such as susceptibility
to electronic line noise, power outage or potential fire
hazard. In addition, this mechanical instrument is
simple to operate, easy to troubleshoot, and can be
readily flushed or purged to remove foreign matter or
trapped gas. Accurate and reliable, the Ashcroft A4A
sets a new standard for precision test gauges.