PNG ICO ICNS MORE
Education & science
3D
Pretty Office 10
tools, Compasser, ruler
Black
512x512
Circle, ruler, Semi
Signs & symbols
Free 3d Glossy Interface Icon Set
school, tools, scissors
64x64
Computer & hardware
iMod
measure, triangle, ruler
Mixed
Vista Style Base Software
ruler, measure, height
256x256
Photography & graphic design
Dark Glass
ruler, measure, Pen
128x128
UI
Nuvola
scissors, triangle, ruler