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Education & science
3D
Pretty Office 10
Circle, ruler, Semi
Black
512x512
ruler, Pen, pencil
Orange
triangle, ruler
Signs & symbols
Free 3d Glossy Interface Icon Set
school, tools, scissors
64x64
UI
Smooth
All Google icons
B, ruler
DarkCyan
128x128
ruler, y
Gold
Lb, ruler
DodgerBlue
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Lb, Md, ruler
Gainsboro
24x24
Glyph
Windows 8 icons
ruler
DarkSlateGray
26x26
Mini icon set Part 1
48x48
DarkGray
Family & home
Pixel
IconBeast Lite
29x30
Super Mono Basic
green, ruler, Basic
ruler, Basic, triangle
Basic, ruler, red
Basic, red, ruler
ruler, yellow, Basic
yellow, Basic, ruler
Computer & hardware
Strabo
Peru
Windows 8 Pack (Metro Style)
Mixed
48px web iconset
Aristocracy
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Super Mono Stickers
ruler, sticker
sticker, triangle, ruler