Middle of the gauge looks like 40 is that psi?
i think for ol'timey white gas range top stoves. i got 1 similar from a coleman stove.
I don't know about gas pumps. If not that, maybe a vacuum pump? What happens when you operate it? Does it move air in or out? The T handle valve may be to release the vacuum.
heres 1 i have, gauge is very similar. I don't have any pipe fittings that large though.
(https://i.postimg.cc/NFfYTc76/SAM_0694.jpg) (https://postimg.cc/MM4h2gLH)
(https://i.postimg.cc/wMqHJmY4/SAM_0699.jpg) (https://postimg.cc/Q9yRZVtc)
White gas stove? hmmm I've seen a kerosene one with glass storage bottles.
What kind of pressure would the gasoline be under?
Back in the late 30's early 40's my parents had a white gas kitchen stove. You would pump it up and the pressure was self regulated, seems it was not much.
MBG, white gas = coleman fuel, not explosive as what we think of gasoline 2day.
Radiator pressure testing device with the fitting missing?
I remember gas stations still selling white gas in the 1960's. Bulk oil in glass bottles also.
EvilDr235