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 19087, 1100 Probed Test Earplugs 393-2010-50, 10 Pair/Bag, 5 Bags/Case, 50 Pair/Case, 7000002409
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 19871, Neoprene High Performance Rubber and Gasket Adhesive 1300, Yellow, 1 Quart Can, 7100025171, 12/case
Standard Abrasives 875510, Buff and Blend AP Mounted Flap Brush, 2 in x 2 in x 1/4 in, A MED, 7000122219 