Original French WW2 HPZ aircraft Gauge For Sale

This is a very nice and very rare original French WW2 HPZ aircraft gauge. (HPZ was the standard pressure unit in France from 1919 to 1961) it is very rare to see French WW2 aircraft guage come on the market because so many French aircraft were destroyed or captured during the German occupation. You can tell this is from WW2 because the marker (Air- equipment in Bois Colombes France and with either partnership or license with Jager aviation) they where a military supplier, and by the red military approval marks on the back, and also it’s dated on the back 4.40 standing for April 1940. This is an incredible example ready for display and further research.