One of the reasons for Tracerco getting into this market was to satisfy the need for an Intrinsically Safe product. This is important for hazardous areas specifically in oil and gas drilling or mining operations where any spark could be catastrophic. The optional plastic chassis neatly holds the curly multicore connection to the extendable geiger-muller sensor. The explicit user interface and rugged construction has made it very popular in other markets that do not need the IS certification. Users and specifiers are happy to pay a premium because of the simple operation and unambiguous communication of potential hazards, proving to the client that good Design sells.