WAngle gauge
WBrannock Device
WCombination square
WCoordinate-measuring machine
WCrescograph
WDiagonal scale
WDiameter tape
WDividing engine
WEngineer's spirit level
WExtensometer
WGeometry template
WGoniometer
WHook gauge
WInclinometer
WIncrement borer
WIndicator (distance amplifying instrument)
WLens clock
WOpisometer
WOrchidometer
WOxford Set of Mathematical Instruments
WPantometrum Kircherianum
WProfilometer
WProtractor
WRadius gauge
WSliding T bevel
WSpeed square
WSpherometer
WSquare (tool)
WSteel square
WSurface forces apparatus
WTry square