"gauge" - key terms from Wikipedia

american wire gauge
break of gauge
broad gauge
cape gauge
dual gauge
fuel gauge
gauge
gauge	boson
gauge	bosons
gauge	drill bits
gauge	field
gauge	fixing
gauge	group
gauge	invariance
gauge	invariant
gauge	locomotives
gauge	pressure
gauge	railway
gauge	railways
gauge	shotgun
gauge	symmetry
gauge	theory
gauge	trains
gauge	transformation
gauge	transformations
heat gauge
iberian gauge
ionization gauge
loading gauge
mcleod gauge
metre gauge
mm gauge
n gauge
narrow gauge
narrow gauge	lines
narrow gauge	railway
narrow gauge	railways
power gauge
rail gauge
rain gauge
russian gauge
shotgun gauge
soul gauge
standard gauge
strain gauge
super combo gauge
tide gauge
tipping bucket rain gauge
track gauge
wire gauge