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The condition appears ex locomotive with no corrosion or pin holes
these signs seldom come up in any condition
Prior to the double Spagnoletti block indicators there were two individual instruments
Sykes & Co and is excellent ex box working condition
This instrument is in tested working order and great condition
RA 7988 LOCOMOTIVE BRASS CASED "DUPLEX" VACUUM GAUGE TRAINING MODEL parts The condition appears ex locomotiveAn ex steam locomotive brass cased "Duplex" vacuum gauge with the face removed, this gauge would have had two pointers hence to 2 sets of Bourdon gauges. This is a 6 inch face gauge plus the back flange. Both sets of gauges work and show how all pressure gauges work.
