The Fluke 28 II Ex Intrinsically Safe True-RMS Digital Multimeter is the most rugged IS DMM you can buy.
Features:
• A completely sealed, IP67 rated case
• Withstands drops up to 10 feet or 3 meters (with holster)
• Dustproof per IEC60529 IP6x
• Waterproof per IEC60529 IPx7
• Meets IEC Overvoltage Electrical Safety Standard No. 61010-1:2001
• Measurement Category III, 1000V, Pollution Degree 2
• Measurement Category IV, 600V, Pollution Degree 2
• Reversible holster for added protection of the display when not in use