Ex Air Transat Lockheed L-1011 Tristar C-FTND cockpit gauge removed during aircraft part out when it was scrapped at Marana Airport MZJ in 1999 as can be seen on the original Air Transat paperwork this item comes with.
 
This gauge also flew for Air Lanka, Air Canada and Gulf Air on the same airframe. It was purchased by the RAF as a spare for their Tristar fleet but was not used in the end.