During that stage of his career he traveled extensively getting to know everyone in the testing business and got to know many inventors developing new strain gauge technologies.
He helped many of these inventors set up businesses, which he took financial stakes in, and arranged to sell the devices through Baldwin-Southwark.
[5] In the mid 1950s the Budd Company of Philadelphia, opened up a new division called “Tatnall Measuring Systems” (TMS) focusing on advanced equipment and materials testing.
He hired Felix Zandman as director of basic research and academics in the field of strain measurement including William M. Murray and Dan Post.
[3] Tatnall wrote the autobiographical book “Tatnall on Testing, An autobiographical account of adventures under 13 Vice Presidents" outlining his view of the early history of strain gauge development and his role in it, noting "a test is worth a thousand opinions".