This is an ideal sized compact digital level that also incorporates the bubble. At 8 inches with 0.1 Degree Resolution. It"s LCD display is easy to read with measurements in either degrees and percentages. 1 horizontal and 1 vertical vial. Buzzer Sound at 0, 90 and when you hold a reading Hold Function to freeze display on current reading Long Battery Life with 3 minutes auto off. Built in strong magnet base to firmly hold on flat and pipe surfaces