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Interface
Flat
Sharing out
industry, Factory, units
Black
512x512
Computer
Computer And Media 1
units, telecommunication, web
Business
Stationery
stacked, stack, Business
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Photography & graphic design
3D
32x32 Free Design Icons
cube, measure, ruler
Green
32x32
UI
Glyph
Free Mobile Icon Kit
measure, units
64x64
Desktop apps
16x16 Free Toolbar Icons
rulers, units, triangle
Goldenrod
16x16