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 05049, Cloth Belt 384F, 80+ XF-weight, 1 in x 30 in, Fabri-lok, Full-flex, 7100141431, 200 per case
Dynabrade 78597 3/8" Dia. x 1-1/2" W x 1/8" Center Hole, 180 Grit, 100/pack
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 06512, Scotch Steel Gray Masking Paper, 06512, 12 in x 1000 ft, 3 per case, 7010327747
3M 00705, Interam Stainless Steel Foil Tape T-65, 4 in x 100 ft, 7100024280
3M 10119, Synthetic Steel Wool Pad 10119NA, 0000 Super Fine, 7000126181
3M 69602, Cloth Belt 777F, 60 YF-weight, 1 in x 11 in, Sine-lok, Full-flex, 7010295223, 500 per case
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
3M 14725, Foam and Fabric Spray Adhesive 24, Orange, 16 fl oz Can (Net Wt 13.8 oz), 7100179450, 12/Case 