<div class="description">
<p>Male pilot wearing a helmet, cover image from Pamphlet: Bulletin CS-632 Hypoxia warning system for monitoring partial pressure of oxygen in artificial atmospheric environments, Illustration, p. 1.
</p><p>The brochure describes the operation, application, and specifications of a system designed to monitor oxygen partial pressure in pilots' masks and helmets and warn them when levels dip dangerously low. 
</p>
Circa 1963. No copyright statement. No copyright renewals.</div>
<div class="fn value">
Unknown<span style="display: none;">Unknown </span></div>
1963<div style="display: none;">date QS:P571,+1963-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external free" href="https://digital.sciencehistory.org/works/kd17ct42v">https://digital.sciencehistory.org/works/kd17ct42v</a>