Sometimes we can find a screw on the fuel tank of a Swedish lantern. We know it's for manometer but original manometer is difficult to have. So we ask a local collector who is familiar with manometer to build a custom made one. The thread size is M7(left is manometer he made; right is original screw on the fuel tank) The manometer works perfectly and precisely.
Very nice! I have been wanting to do something similar on e.g. Coleman lanterns but so far the pressure gauges I have seen on ebay have been too large and/or the max. pressure too high. I want to mount them on the fuel cap so they should be about 1" dia and low profile with a range of about 0-50 psi or 4 bar.
Actually we made the manometers not only for Swedish lanterns but also for coleman lantern and it's mounted on the fuel cap.
