Assuming your pump is a Erie 175 you are working off some misinformation. If I remember correctly the Gas Pump book by Benjamin and Henderson indentify this pump as being made by Erie in around 1907. This is impossible as Erie didn't go into business until 1921. The 175 was introduced around 1935 and was still being made in the 1950s. This was not a curb pump but a kerosene pump and usually stood to the side of a station. The one gallon measurment indicates it was used to put one gallon of kerosene into a can.

Author, Gas Pump Identfication books 1st & 2nd Editions & Air Meter Identification books
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