Harley Davidson Wl 1947 Chevi 1920 oil pressure gauge Knucklehead panhead flathead

It s a fantastic vintage gadget to better control of engine oil pressure. (The scale is different like it shows 2on gauge is about 0, 5Bar, 4 is about 1Bar, 6is2bar, 8is3bar). Old Chevi gauge, cover made by myself. Face came from old voltage gauge, down side from inox of caffe barista cup. 8 hours of work. Oil sae60 with syntetic oil stabilizer by Lucas