Insize 2170-1, DIGITAL LEVEL AND PROTRACTOR, 4_90?, 6928640324895

Resolution 0.1?(=.021in/ft)
Aluminum frame. Magnetic bottom.
The display flips over when the bottom faces up.
The backlight is on automatically when in use, and automatically off in 15 minutes after use.
The sea level is permanently set inside the chip, zero setting is not needed when battery is replaced.
Buttons: ON/OFF, ZERO, absolute and incremental measurement.
One AAA battery.