WM B. Johnson was founded in 1955. Mr. Johnson was a health physicists who attended Purdue University and worked on the Manhattan Project.
       Johnson’s early products were mainly specialty products built under contract for the U.S. Navy, quartz fiber pocket dosimeters and hand held survey meters. In the 1970’s Johnson developed a significant market for very high range telescoping survey meters (utilized around nuclear reactors) and quartz fiber pocket dosimeters. Johnson also obtained the rights to manufacturer a high quality, flexible alpha scintillator used extensively by government and private laboratories to measure radon and special nuclear materials.
        In 1960 Mr. Johnson and Creigh Nickell (founder of Appalachian Electronic Instruments) became friends and business associates. Their business association began when Mr. Nickell was contracted to manufacturer some of Johnson’s portable survey meters. The association continued to grow and by 1970 AEI was developing and manufacturing most of the portable survey meters and many of the other products sold by WM B. Johnson.
        In 1986 Mr. Johnson decided to sell the business due to poor health. In I987 a new corporation was formed to purchase the assets from Mr. Johnson, but he died before the sale could be completed.
        In 1988 the new corporation (same name as old corporation) purchased the assets of WM B. Johnson from Mr. Johnson’s estate. The new corporation had vastly different capability than the old corporation. Two of the new owners had vast experience in designing and manufacturing electronic and nuclear monitoring instrumentation. After reviewing Johnson’s existing product line, the new owners decided to incorporate the latest field proven technology in Johnson’s entire line of instrumentation.
       Johnson has continued this philosophy since purchasing the company to the present.
       Johnson currently maintains the most durable, technically advanced and user friendly instrumentation currently available from any manufacturer. Johnson is a major supplier of radiation monitoring instrumentation utilized by the U.S. Navy, nuclear power research, and homeland security organizations.