The Fluke 28 II digital multimeter defines the standard for operating in harsh conditions with the features and accuracy to troubleshoot most electrical problems. The meter offers an IP 67 (waterproof and dustproof) rating, MSHA approvals, extended operating temperature range of -15 °C to +55 °C (5 °F to 131 °F, -40 °C for up to 20 minutes) and 95% humidity, and has been designed and tested to withstand a 3 m (10 ft) drop. The Fluke 28 II Rigged Digital Multimeter is built to work in the toughest environments.