With transverse and longitudinal vials
Used as level and slope meter to measure the angle of two separate surfaces
Aluminum frame
Magnetic bottom
The sea level is permanently set inside the chip, zero setting is not needed when batteries are replaced
Buttons: ON/OFF, absolute and incremental measurement, keep the reading, buzzer alarm(not for 4910-400), unit (mm/m, %, in/ft), conversion(not for 4910-400), backlight
The display flips over when the bottom faces up

Insize 4807, ANGLE GAGE SET, 6928640319341
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 06524, Scotch Steel Gray Masking Paper, 06524, 24 in x 1000 ft, 1 per case, 7000045442
3M 01319, Scotch-Brite Cut and Polish Flap Brush, 12 in x 2 in x 5 in 7A MED, 7010299326 