YT-30395 – Digital level with LED display

Features:

150 mm electronic level with LED lighting, aluminum body measuring surface with milled groove on the bottom plane, two strong magnets installed. Reading on the LCD display. Functions: display in degrees, percent, millimeters or inches, measurement hold, audible signal, auto power-off. Power supply: 2 × 1.5 V AAA batteries. The level comes with a cover.

For precise vertical/level measurements.

According to the user manual