"Calculator" icon from Tango Project Since version 0.8.90 Tango Project icons are Public Domain: Tango Project FAQ tango icon math Tango Accessories Calculator
Minus icon from Tango Project Since version 0.8.90 Tango Project icons are Public Domain: Tango Project FAQ tango icon sign Tango List Remove
Plus icon from Tango Project Since version 0.8.90 Tango Project icons are Public Domain: Tango Project FAQ tango icon sign Tango List Add
icon graphics statistics rounded Graphics Rounded clip art graphics rounded statistic Graphics Rounded clip art