Speedwell Gauges

Hi all , Ihave a set of Speedwell gauges consisting of a water temp gauge, oil pressure and a tacho, temp gauge tested and working in hot water, Ihave no means of testing the oil press gauge or the tacho, offers please, can't put a price on as value not known , there is a tacho on ebay for silly money , just expecting a fair price,can't seem to post up a pic so message me for emailed pics , I am inCornwall if anyone wants a view,

Chris