WTechnical drawing tool
WCentrolinead
WCompass (drawing tool)
WDrafting machine
WDrawing board
WFlat spline
WFrench curve
WLesbian rule
WPantograph
WPhysiognotrace
WPolygraph (duplicating device)
WProtractor
WReduction compass
WRuling pen
WSet square
WSquare (tool)
WStraightedge
WT-square