The letter discusses Beckman's scheduled meetings, marketing strategies for the pH meter, and interest in postal meters.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the…
This letter, written while Arnold Beckman was on a multi-city trip promoting his pH meter, concerns strategies for marketing the instruments and concern about the friction between a salesman and distributor.
The letter was written during a multi-city trip, most likely in Pittsburgh or New York. Beckman discusses the cases of the instruments, and his desire to replace metal cases with wood; pricing of the instruments; and…