WAnalog computer
WAntikythera mechanism
WAstrolabe
WDeltar
WDifferential analyser
WDumaresq
WE6B
WElectronic Associates
WELWAT
WEquatorium
WDesmond Paul Henry
WHRS-100
WMallock machine
WMatchbox Educable Noughts and Crosses Engine
WMinoan Moulds of Palaikastro
WMONIAC
WNomogram
WPlanisphere
WRangekeeper
WSCR-584 radar
WSCR-784 Radar
WShadow square
WSlide rule
WTide-predicting machine
WTide-Predicting Machine No. 2
WRajko Tomović
WTorpedo Data Computer
WTote board
WVickers range clock
WVolvelle