The month of July 1941 proved difficult for Pauling. His health, though steadily improving, was not yet at its peak, his
government work was demanding much of his time and energy, and his responsibilities at Caltech were pushing him beyond his
limits. The creation of the OSRD and resultant restructuring of the NDRC only added to the chaos.
Pauling, however, quickly found that things were not as bad as they seemed. His wife, Ava Helen, was carefully managing his
diet and exercise, allowing him to maximize his time in the laboratory while remaining relatively healthy. His administrative
work at Caltech was being overseen by the chemistry department staff and secretaries and his war research enjoyed the full
support of the institution's administrators. Even better, the OSRD was handling things beautifully. With Vannevar Bush at
the helm, the OSRD was reviewing and renewing NDRC contracts through a process designed to prevent disruption of research.
This process was, in large part, facilitated by a few capable administrators. Irvin Stewart, secretary to the NDRC and one of Bush's pre-war companions, was one such official. He provided invaluable aid to researchers
like Pauling throughout the war, keeping his charges funded, supplied, and debriefed. With his help, Pauling's oxygen meter
contracts were renewed by mid-August and the operation continued undisturbed.
Over the next seven months Pauling's group worked virtually without contact from the OSRD or NDRC and focused on producing
oxygen meters as rapidly as possible. In addition to the original model which had been distributed to labs around the country,
Pauling's team also devised a unit with a special damping apparatus to be used on submarines. By early spring 1942, orders
for the new model had begun pouring in from military outfits and scientists. With more than fifty requests by April, Pauling
and his associates quickly realized that their small laboratory workshop couldn't keep up with the volume. Daunted, Pauling
turned to another Caltech staff member, Dr. Arnold O. Beckman. In the 1930s, Dr. Beckman had garnered acclaim for the invention and production of a pH meter and a spectrophotometer,
leading him to open an instrument manufacturing company. His skills were just what Pauling needed.