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iOS 7 icons
scale, Balance
Black
512x512
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Modern UI
scale, appbar, unbalanced
76x76
scale, appbar
App Icons
scale
DarkGray
52x52
26x26
Free icons for Windows8/Metro
DarkSlateGray
Educons
scale, pencil
Peru
128x128
Icons8 — ever-growing set of Windows 8 (Metro style) icons
Open source icons - gcons
DimGray
32x32
Eloquence!
ruler, scale
DarkGoldenrod
SlateBlue
iPhone Toolbar
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GIS
plus, Add, Bar
24x24
Web Design Creatives
write, Edit, scale
Gnome 2.18 Icon Theme
document, chart, scale
scale, wallpaper, stock
Silver
16x16
Constellations of The Zodiac
scale, libra
LemonChiffon
Fugue
writing, write, Edit
vertical, Edit, scale
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Sports & awards
Glyph
Fitness icon collection
scale, fitness, Body
Arrows
Developer Set
zoom, scale, view
Business & finance
Outline
TheFreeForty
ruler, measure, scale
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Navigation Set - Arrows, Part Two
Arrow, Fullscreen, scale