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

3M 93623, Steel Mesh Viso V4G-10P 10 ea/Case, 7000103815
3M 10118, Synthetic Steel Wool Pads, 10118NA, #0 Fine, 7000126148
3M 06536, Scotch Steel Gray Masking Paper, 06536, 36 in x 1000 ft, 1 per case, 7000045443
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
Standard Abrasives 875501, Buff and Blend GP Mounted Flap Brush, Medium, 3 in x 2 in x 1/4 in, 7000122218 