Attached is a picture of a Bowser Varley 318 which I was fortunate enough to purchase recently. I believe this particular model may not be as common as the Xatco 310. The primary difference between the two pumps is the manufacture of the clockface unit. Unfortunately there was no visi gauge with the pump and I would certainly appreciate it if some one had a gauge they would be willing to part with that fits any of the following models; 310, 311. 318, 320, 410, 411 or 418. Any help in locating a visi gauge would make this Oldgas member finish the year on a very positive note.