S
WCary 14 Spectrophotometer
WDichroscopeA
WDNA sequencer
WDU spectrophotometerB
WFilar micrometer
WHarvard Collection of Historical Scientific InstrumentsC
WLiulin type instruments
WMicroscopeD
WMulti-component gas analyzer system
WPH meterE
WPost office box (electricity)
WPQubeF
WSpectronic 20
WZ-tube