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 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 93623, Steel Mesh Viso V4G-10P 10 ea/Case, 7000103815
Dynabrade 78582 1/4" Dia. x 1" W x 1/8" Center Hole, 180 Grit, 100/pack
Standard Abrasives 875503, Buff and Blend GP Mounted Flap Brush, Very Fine, 3 in x 2 in x 1/4 in, 7000122256 