Developing Instruments for 175 Years
The need to improve kerosene safety in the 1850s led to the development of the Foster automatic oil tester, a closed-cup design instrument considered by many to be the first thermometer manufactured in the United States.
Becoming the R.P. Palmer Co. in 1872, the firm specialized in mechanical temperature and pressure devices. The firm joined forces with digital temperature specialist Wahl Instruments in 1997 to become Palmer Wahl.