During the research and development of Thermohousings,  N=K=W gives extreme importance to their field worthiness. This photo shows a Thermohousing strapped to a shake table. The table has a "C" beam bolted to it, which imparts an arching movement to the Thermohousing during the shake process. This simulates the worst, and most demanding condition for a Thermohousing. Resulting failures are then analyzed, and meaningful changes implemented into the design of new models. Many of this type of Thermohousings are used for perforating service. N=K=W's design experience of subsurface wireline equipment, spans well over 20 years.