Designed to survive water, dust and rough handling, the Fluke 27 II and 28 II digital multimeters are IP 67 rated for water and dust resistance and offer an operating temperature range of minus 15C to 55C (5F to 131F). In addition, they will function in minus 40C temperatures for up to 20 min. and also in 95% humidity, and they will withstand a 3-m (10-ft) drop. When enclosed in their protective yellow holsters, both meters will float in water. They are suitable for such job environments as manufacturing plants and foundries, food processing and bottling plants, water and wastewater facilities, marine service and repair, mining, drilling and materials extraction, and outside testing in any weather. The meters measure up to 1,000 VAC and VDC and up to 10 A (20 A for 30 sec.). Average battery life (three AA batteries) is 800 hours.