- Flip-up display for easy viewing from any position - Built-in level display using Dead Level Technology TM is always visible and permanently stored. - HOLD -feature allows you take a reading and hold the value while you move the gauge to a new position. - The machined aluminum base imbedded with high strength magnets sits perfectly flat for optimum accuracy. - It also has a built in V-groove for use on pipes or conduit. - AAA batteries for super long life