Professional Equipment: (what Ted linked to) Gas detectors | Thermal Imaging Cameras

Tool Experts: Tool Experts-Home Inspection, Maintenance, and Testing Instruments

Inspector Tools: http://www.inspectortools.com/

and don't forget you local Grainger's: Grainger Industrial Supply

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Jerry Peck, Construction / Litigation Consultant
Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )