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 06524, Scotch Steel Gray Masking Paper, 06524, 24 in x 1000 ft, 1 per case, 7000045442
3M 06536, Scotch Steel Gray Masking Paper, 06536, 36 in x 1000 ft, 1 per case, 7000045443
3M 87429, Final Finishing Pads 10199NA4PK, 3 3/4 in x 6 in x 5/8 in, Replaces 0000 Steel Wool, 7100096075, 4 pads per pack
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
Insize 4102-136, STEEL GAGE BLOCK SET, 36pcs, grade AS-1, 6928640329876
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440
3M 65087, Scotch-Brite Diamond Wheel, 3" x 1/2" x 3/8" 645DC, 7100083803
Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
3M 27963, NX Hook and Loop Paper Disc, P600 C-weight, 5 in x NH, 7010361040 