...it's not the
exact visigauge...compare the bottom castings...I'm actually looking for one just like the one on Rob's pump
...I also agree 100% that it's a National visigauge - but I think it's an earlier incarnation...I've never seen one with the thicker lip on the bottom casting before...I had the magnifying glass out last night, looking in Jack's books, and it wasn't pictured on any of the pumps...