One-piece brass body is shock-resistant and highly durable Ergonomic sleek styling of the housing which gives the instrument a low and compact profile and comfortable grip Two integrated attachment points at the top providing multiple options for gear configuration Custom Zeagle dial, easy to read and attractive Copper Beryllium spiral-wound rings ensure greater reliability and miniaturization, while the Bourdon tube design provides measurement accuracy Operating temperature from 40 degrees Celsius to -5 degrees Celsius (104 degrees Fahrenheit to 23 degrees Fahrenheit) Available in both imperial and metric