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

Insize 0130-L110, LIGHT METER (BASIC TYPE), 6974029776564
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
Standard Abrasives 42730, A/O Flap Wheel 640605, 4 in x 2 in x 5/8 in 60, 7010369144
3M 10118, Synthetic Steel Wool Pads, 10118NA, #0 Fine, 7000126148
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 10119, Synthetic Steel Wool Pad 10119NA, 0000 Super Fine, 7000126181
3M 01304, Scotch-Brite Cut and Polish Flap Brush, 6 in x 1 in x 2 in 5A MED, 7010366062 